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Finding the Fourth Proportional to 139,554.30, 209,266.65 and 60,627.90

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Solution

The fourth proportional to 139,554.30, 209,266.65 and 60,627.90 is: 90,913.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,554.30 : 209,266.65 = 60,627.90 : x
  2. Step 2: Convert to fraction form
    139,554.30/209,266.65 = 60,627.90/x
  3. Step 3: Cross multiply
    139,554.30x = 209,266.65 × 60,627.90
  4. Step 4: Simplify right side
    139,554.30x = 12,687,397,529.54
  5. Step 5: Solve for x
    x = 12,687,397,529.54/139,554.30
  6. Step 6: Final answer
    x = 90,913.70

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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.