Home / 208,015,725.60-312,060,913.20-86,859,424.80

Finding the Fourth Proportional to 208,015,725.60, 312,060,913.20 and 86,859,424.80

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Solution

The fourth proportional to 208,015,725.60, 312,060,913.20 and 86,859,424.80 is: 130,304,722.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,725.60 : 312,060,913.20 = 86,859,424.80 : x
  2. Step 2: Convert to fraction form
    208,015,725.60/312,060,913.20 = 86,859,424.80/x
  3. Step 3: Cross multiply
    208,015,725.60x = 312,060,913.20 × 86,859,424.80
  4. Step 4: Simplify right side
    208,015,725.60x = 27,105,431,423,114,724
  5. Step 5: Solve for x
    x = 27,105,431,423,114,724/208,015,725.60
  6. Step 6: Final answer
    x = 130,304,722.61

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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.