Home / 129,304,746,812.30-178,414,670,911.33-72,203,271,405.81

Finding the Fourth Proportional to 129,304,746,812.30, 178,414,670,911.33 and 72,203,271,405.81

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Solution

The fourth proportional to 129,304,746,812.30, 178,414,670,911.33 and 72,203,271,405.81 is: 99,626,063,421.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,304,746,812.30 : 178,414,670,911.33 = 72,203,271,405.81 : x
  2. Step 2: Convert to fraction form
    129,304,746,812.30/178,414,670,911.33 = 72,203,271,405.81/x
  3. Step 3: Cross multiply
    129,304,746,812.30x = 178,414,670,911.33 × 72,203,271,405.81
  4. Step 4: Simplify right side
    129,304,746,812.30x = 12,882,122,906,589,032,611,840
  5. Step 5: Solve for x
    x = 12,882,122,906,589,032,611,840/129,304,746,812.30
  6. Step 6: Final answer
    x = 99,626,063,421.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.