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Finding the Fourth Proportional to 138,668.60, 207,814.44 and 58,640.06

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Solution

The fourth proportional to 138,668.60, 207,814.44 and 58,640.06 is: 87,880.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,668.60 : 207,814.44 = 58,640.06 : x
  2. Step 2: Convert to fraction form
    138,668.60/207,814.44 = 58,640.06/x
  3. Step 3: Cross multiply
    138,668.60x = 207,814.44 × 58,640.06
  4. Step 4: Simplify right side
    138,668.60x = 12,186,251,230.47
  5. Step 5: Solve for x
    x = 12,186,251,230.47/138,668.60
  6. Step 6: Final answer
    x = 87,880.39

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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.