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Finding the Fourth Proportional to 138,539.70, 207,722.88 and 58,536.27

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Solution

The fourth proportional to 138,539.70, 207,722.88 and 58,536.27 is: 87,767.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,539.70 : 207,722.88 = 58,536.27 : x
  2. Step 2: Convert to fraction form
    138,539.70/207,722.88 = 58,536.27/x
  3. Step 3: Cross multiply
    138,539.70x = 207,722.88 × 58,536.27
  4. Step 4: Simplify right side
    138,539.70x = 12,159,322,588.86
  5. Step 5: Solve for x
    x = 12,159,322,588.86/138,539.70
  6. Step 6: Final answer
    x = 87,767.78

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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.