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Finding the Fourth Proportional to 138,672.60, 207,820.44 and 58,644.06

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Solution

The fourth proportional to 138,672.60, 207,820.44 and 58,644.06 is: 87,886.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,672.60 : 207,820.44 = 58,644.06 : x
  2. Step 2: Convert to fraction form
    138,672.60/207,820.44 = 58,644.06/x
  3. Step 3: Cross multiply
    138,672.60x = 207,820.44 × 58,644.06
  4. Step 4: Simplify right side
    138,672.60x = 12,187,434,352.59
  5. Step 5: Solve for x
    x = 12,187,434,352.59/138,672.60
  6. Step 6: Final answer
    x = 87,886.39

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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.