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Finding the Fourth Proportional to 147,691.88, 203,796.12 and 84,030.74

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Solution

The fourth proportional to 147,691.88, 203,796.12 and 84,030.74 is: 115,951.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,691.88 : 203,796.12 = 84,030.74 : x
  2. Step 2: Convert to fraction form
    147,691.88/203,796.12 = 84,030.74/x
  3. Step 3: Cross multiply
    147,691.88x = 203,796.12 × 84,030.74
  4. Step 4: Simplify right side
    147,691.88x = 17,125,138,772.73
  5. Step 5: Solve for x
    x = 17,125,138,772.73/147,691.88
  6. Step 6: Final answer
    x = 115,951.80

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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.