Home / 129,948,557.61-194,791,600.02-81,460,397.45

Finding the Fourth Proportional to 129,948,557.61, 194,791,600.02 and 81,460,397.45

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Solution

The fourth proportional to 129,948,557.61, 194,791,600.02 and 81,460,397.45 is: 122,108,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,948,557.61 : 194,791,600.02 = 81,460,397.45 : x
  2. Step 2: Convert to fraction form
    129,948,557.61/194,791,600.02 = 81,460,397.45/x
  3. Step 3: Cross multiply
    129,948,557.61x = 194,791,600.02 × 81,460,397.45
  4. Step 4: Simplify right side
    129,948,557.61x = 15,867,801,156,576,670
  5. Step 5: Solve for x
    x = 15,867,801,156,576,670/129,948,557.61
  6. Step 6: Final answer
    x = 122,108,328.47

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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.