Home / 129,581,251-194,443,620.90-77,638,206.04

Finding the Fourth Proportional to 129,581,251, 194,443,620.90 and 77,638,206.04

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Solution

The fourth proportional to 129,581,251, 194,443,620.90 and 77,638,206.04 is: 116,500,294.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,581,251 : 194,443,620.90 = 77,638,206.04 : x
  2. Step 2: Convert to fraction form
    129,581,251/194,443,620.90 = 77,638,206.04/x
  3. Step 3: Cross multiply
    129,581,251x = 194,443,620.90 × 77,638,206.04
  4. Step 4: Simplify right side
    129,581,251x = 15,096,253,902,597,852
  5. Step 5: Solve for x
    x = 15,096,253,902,597,852/129,581,251
  6. Step 6: Final answer
    x = 116,500,294.50

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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.