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Finding the Fourth Proportional to 146,489.60, 219,691.20 and 57,713.60

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Solution

The fourth proportional to 146,489.60, 219,691.20 and 57,713.60 is: 86,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,489.60 : 219,691.20 = 57,713.60 : x
  2. Step 2: Convert to fraction form
    146,489.60/219,691.20 = 57,713.60/x
  3. Step 3: Cross multiply
    146,489.60x = 219,691.20 × 57,713.60
  4. Step 4: Simplify right side
    146,489.60x = 12,679,170,040.32
  5. Step 5: Solve for x
    x = 12,679,170,040.32/146,489.60
  6. Step 6: Final answer
    x = 86,553.38

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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.