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Finding the Fourth Proportional to 138,551.16, 207,783 and 59,644.20

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Solution

The fourth proportional to 138,551.16, 207,783 and 59,644.20 is: 89,447.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,551.16 : 207,783 = 59,644.20 : x
  2. Step 2: Convert to fraction form
    138,551.16/207,783 = 59,644.20/x
  3. Step 3: Cross multiply
    138,551.16x = 207,783 × 59,644.20
  4. Step 4: Simplify right side
    138,551.16x = 12,393,050,808.60
  5. Step 5: Solve for x
    x = 12,393,050,808.60/138,551.16
  6. Step 6: Final answer
    x = 89,447.47

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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.