Home / 121,143,658.20-181,715,487.30-72,770,717.40

Finding the Fourth Proportional to 121,143,658.20, 181,715,487.30 and 72,770,717.40

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Solution

The fourth proportional to 121,143,658.20, 181,715,487.30 and 72,770,717.40 is: 109,156,076.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,143,658.20 : 181,715,487.30 = 72,770,717.40 : x
  2. Step 2: Convert to fraction form
    121,143,658.20/181,715,487.30 = 72,770,717.40/x
  3. Step 3: Cross multiply
    121,143,658.20x = 181,715,487.30 × 72,770,717.40
  4. Step 4: Simplify right side
    121,143,658.20x = 13,223,566,373,511,590
  5. Step 5: Solve for x
    x = 13,223,566,373,511,590/121,143,658.20
  6. Step 6: Final answer
    x = 109,156,076.10

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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.