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Finding the Fourth Proportional to 138,914.39, 208,347.32 and 39,050.88

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Solution

The fourth proportional to 138,914.39, 208,347.32 and 39,050.88 is: 58,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,914.39 : 208,347.32 = 39,050.88 : x
  2. Step 2: Convert to fraction form
    138,914.39/208,347.32 = 39,050.88/x
  3. Step 3: Cross multiply
    138,914.39x = 208,347.32 × 39,050.88
  4. Step 4: Simplify right side
    138,914.39x = 8,136,145,507.97
  5. Step 5: Solve for x
    x = 8,136,145,507.97/138,914.39
  6. Step 6: Final answer
    x = 58,569.49

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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.