Home / 215,941.68-323,918.28-75,708.72

Finding the Fourth Proportional to 215,941.68, 323,918.28 and 75,708.72

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Solution

The fourth proportional to 215,941.68, 323,918.28 and 75,708.72 is: 113,565.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,941.68 : 323,918.28 = 75,708.72 : x
  2. Step 2: Convert to fraction form
    215,941.68/323,918.28 = 75,708.72/x
  3. Step 3: Cross multiply
    215,941.68x = 323,918.28 × 75,708.72
  4. Step 4: Simplify right side
    215,941.68x = 24,523,438,363.40
  5. Step 5: Solve for x
    x = 24,523,438,363.40/215,941.68
  6. Step 6: Final answer
    x = 113,565.10

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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.