Home / 129,311,373.70-193,967,060.55-115,281,331.30

Finding the Fourth Proportional to 129,311,373.70, 193,967,060.55 and 115,281,331.30

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Solution

The fourth proportional to 129,311,373.70, 193,967,060.55 and 115,281,331.30 is: 172,921,996.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,311,373.70 : 193,967,060.55 = 115,281,331.30 : x
  2. Step 2: Convert to fraction form
    129,311,373.70/193,967,060.55 = 115,281,331.30/x
  3. Step 3: Cross multiply
    129,311,373.70x = 193,967,060.55 × 115,281,331.30
  4. Step 4: Simplify right side
    129,311,373.70x = 22,360,780,968,551,712
  5. Step 5: Solve for x
    x = 22,360,780,968,551,712/129,311,373.70
  6. Step 6: Final answer
    x = 172,921,996.95

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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.