Home / 109,154.28-150,613.38-61,390.20

Finding the Fourth Proportional to 109,154.28, 150,613.38 and 61,390.20

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Solution

The fourth proportional to 109,154.28, 150,613.38 and 61,390.20 is: 84,707.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,154.28 : 150,613.38 = 61,390.20 : x
  2. Step 2: Convert to fraction form
    109,154.28/150,613.38 = 61,390.20/x
  3. Step 3: Cross multiply
    109,154.28x = 150,613.38 × 61,390.20
  4. Step 4: Simplify right side
    109,154.28x = 9,246,185,520.88
  5. Step 5: Solve for x
    x = 9,246,185,520.88/109,154.28
  6. Step 6: Final answer
    x = 84,707.49

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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.