Home / 109,363.20-151,073.28-103,686.72

Finding the Fourth Proportional to 109,363.20, 151,073.28 and 103,686.72

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Solution

The fourth proportional to 109,363.20, 151,073.28 and 103,686.72 is: 143,231.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,363.20 : 151,073.28 = 103,686.72 : x
  2. Step 2: Convert to fraction form
    109,363.20/151,073.28 = 103,686.72/x
  3. Step 3: Cross multiply
    109,363.20x = 151,073.28 × 103,686.72
  4. Step 4: Simplify right side
    109,363.20x = 15,664,292,882.84
  5. Step 5: Solve for x
    x = 15,664,292,882.84/109,363.20
  6. Step 6: Final answer
    x = 143,231.84

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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.