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Finding the Fourth Proportional to 139,164.92, 208,779.22 and 60,292.28

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Solution

The fourth proportional to 139,164.92, 208,779.22 and 60,292.28 is: 90,452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,164.92 : 208,779.22 = 60,292.28 : x
  2. Step 2: Convert to fraction form
    139,164.92/208,779.22 = 60,292.28/x
  3. Step 3: Cross multiply
    139,164.92x = 208,779.22 × 60,292.28
  4. Step 4: Simplify right side
    139,164.92x = 12,587,775,190.42
  5. Step 5: Solve for x
    x = 12,587,775,190.42/139,164.92
  6. Step 6: Final answer
    x = 90,452.21

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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.