Home / 128,122,292.13-192,490,033.04-82,154,223

Finding the Fourth Proportional to 128,122,292.13, 192,490,033.04 and 82,154,223

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Solution

The fourth proportional to 128,122,292.13, 192,490,033.04 and 82,154,223 is: 123,427,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,122,292.13 : 192,490,033.04 = 82,154,223 : x
  2. Step 2: Convert to fraction form
    128,122,292.13/192,490,033.04 = 82,154,223/x
  3. Step 3: Cross multiply
    128,122,292.13x = 192,490,033.04 × 82,154,223
  4. Step 4: Simplify right side
    128,122,292.13x = 15,813,869,099,645,528
  5. Step 5: Solve for x
    x = 15,813,869,099,645,528/128,122,292.13
  6. Step 6: Final answer
    x = 123,427,928.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.