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Finding the Fourth Proportional to 138,567.78, 208,184.58 and 88,744.68

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Solution

The fourth proportional to 138,567.78, 208,184.58 and 88,744.68 is: 133,330.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,567.78 : 208,184.58 = 88,744.68 : x
  2. Step 2: Convert to fraction form
    138,567.78/208,184.58 = 88,744.68/x
  3. Step 3: Cross multiply
    138,567.78x = 208,184.58 × 88,744.68
  4. Step 4: Simplify right side
    138,567.78x = 18,475,273,933.03
  5. Step 5: Solve for x
    x = 18,475,273,933.03/138,567.78
  6. Step 6: Final answer
    x = 133,330.23

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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.