Home / 109,167.20-150,640-61,419.52

Finding the Fourth Proportional to 109,167.20, 150,640 and 61,419.52

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Solution

The fourth proportional to 109,167.20, 150,640 and 61,419.52 is: 84,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,167.20 : 150,640 = 61,419.52 : x
  2. Step 2: Convert to fraction form
    109,167.20/150,640 = 61,419.52/x
  3. Step 3: Cross multiply
    109,167.20x = 150,640 × 61,419.52
  4. Step 4: Simplify right side
    109,167.20x = 9,252,236,492.80
  5. Step 5: Solve for x
    x = 9,252,236,492.80/109,167.20
  6. Step 6: Final answer
    x = 84,752.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.