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Finding the Fourth Proportional to 139,158,079.85, 208,737,119.78 and 139,158,079.85

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Solution

The fourth proportional to 139,158,079.85, 208,737,119.78 and 139,158,079.85 is: 208,737,119.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,158,079.85 : 208,737,119.78 = 139,158,079.85 : x
  2. Step 2: Convert to fraction form
    139,158,079.85/208,737,119.78 = 139,158,079.85/x
  3. Step 3: Cross multiply
    139,158,079.85x = 208,737,119.78 × 139,158,079.85
  4. Step 4: Simplify right side
    139,158,079.85x = 29,047,456,781,308,464
  5. Step 5: Solve for x
    x = 29,047,456,781,308,464/139,158,079.85
  6. Step 6: Final answer
    x = 208,737,119.78

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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.