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Finding the Fourth Proportional to 139,217.55, 208,902.87 and 60,332.46

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Solution

The fourth proportional to 139,217.55, 208,902.87 and 60,332.46 is: 90,531.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,217.55 : 208,902.87 = 60,332.46 : x
  2. Step 2: Convert to fraction form
    139,217.55/208,902.87 = 60,332.46/x
  3. Step 3: Cross multiply
    139,217.55x = 208,902.87 × 60,332.46
  4. Step 4: Simplify right side
    139,217.55x = 12,603,624,048.16
  5. Step 5: Solve for x
    x = 12,603,624,048.16/139,217.55
  6. Step 6: Final answer
    x = 90,531.86

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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.