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Finding the Fourth Proportional to 131,854, 181,981.92 and 127,479.28

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Solution

The fourth proportional to 131,854, 181,981.92 and 127,479.28 is: 175,944.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,854 : 181,981.92 = 127,479.28 : x
  2. Step 2: Convert to fraction form
    131,854/181,981.92 = 127,479.28/x
  3. Step 3: Cross multiply
    131,854x = 181,981.92 × 127,479.28
  4. Step 4: Simplify right side
    131,854x = 23,198,924,134.62
  5. Step 5: Solve for x
    x = 23,198,924,134.62/131,854
  6. Step 6: Final answer
    x = 175,944.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.