Home / 100,761.30-138,956.20-62,527.05

Finding the Fourth Proportional to 100,761.30, 138,956.20 and 62,527.05

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Solution

The fourth proportional to 100,761.30, 138,956.20 and 62,527.05 is: 86,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,761.30 : 138,956.20 = 62,527.05 : x
  2. Step 2: Convert to fraction form
    100,761.30/138,956.20 = 62,527.05/x
  3. Step 3: Cross multiply
    100,761.30x = 138,956.20 × 62,527.05
  4. Step 4: Simplify right side
    100,761.30x = 8,688,520,952.57
  5. Step 5: Solve for x
    x = 8,688,520,952.57/100,761.30
  6. Step 6: Final answer
    x = 86,228.75

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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.