Home / 261,999,428.62-392,957,494.92-87,107,915.89

Finding the Fourth Proportional to 261,999,428.62, 392,957,494.92 and 87,107,915.89

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Solution

The fourth proportional to 261,999,428.62, 392,957,494.92 and 87,107,915.89 is: 130,648,026.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,999,428.62 : 392,957,494.92 = 87,107,915.89 : x
  2. Step 2: Convert to fraction form
    261,999,428.62/392,957,494.92 = 87,107,915.89/x
  3. Step 3: Cross multiply
    261,999,428.62x = 392,957,494.92 × 87,107,915.89
  4. Step 4: Simplify right side
    261,999,428.62x = 34,229,708,415,836,464
  5. Step 5: Solve for x
    x = 34,229,708,415,836,464/261,999,428.62
  6. Step 6: Final answer
    x = 130,648,026.97

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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.