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Finding the Fourth Proportional to 139,442.60, 209,141.88 and 60,535.64

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Solution

The fourth proportional to 139,442.60, 209,141.88 and 60,535.64 is: 90,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,442.60 : 209,141.88 = 60,535.64 : x
  2. Step 2: Convert to fraction form
    139,442.60/209,141.88 = 60,535.64/x
  3. Step 3: Cross multiply
    139,442.60x = 209,141.88 × 60,535.64
  4. Step 4: Simplify right side
    139,442.60x = 12,660,537,556.60
  5. Step 5: Solve for x
    x = 12,660,537,556.60/139,442.60
  6. Step 6: Final answer
    x = 90,793.90

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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.