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Finding the Fourth Proportional to 139,335.52, 209,003.28 and 97,967.20

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Solution

The fourth proportional to 139,335.52, 209,003.28 and 97,967.20 is: 146,950.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,335.52 : 209,003.28 = 97,967.20 : x
  2. Step 2: Convert to fraction form
    139,335.52/209,003.28 = 97,967.20/x
  3. Step 3: Cross multiply
    139,335.52x = 209,003.28 × 97,967.20
  4. Step 4: Simplify right side
    139,335.52x = 20,475,466,132.42
  5. Step 5: Solve for x
    x = 20,475,466,132.42/139,335.52
  6. Step 6: Final answer
    x = 146,950.80

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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.