Home / 91,609,915.20-137,414,872.80-77,261,008.20

Finding the Fourth Proportional to 91,609,915.20, 137,414,872.80 and 77,261,008.20

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Solution

The fourth proportional to 91,609,915.20, 137,414,872.80 and 77,261,008.20 is: 115,891,512.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,609,915.20 : 137,414,872.80 = 77,261,008.20 : x
  2. Step 2: Convert to fraction form
    91,609,915.20/137,414,872.80 = 77,261,008.20/x
  3. Step 3: Cross multiply
    91,609,915.20x = 137,414,872.80 × 77,261,008.20
  4. Step 4: Simplify right side
    91,609,915.20x = 10,616,811,614,202,758
  5. Step 5: Solve for x
    x = 10,616,811,614,202,758/91,609,915.20
  6. Step 6: Final answer
    x = 115,891,512.30

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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.