Home / 87,256.14-120,418.53-65,707.30

Finding the Fourth Proportional to 87,256.14, 120,418.53 and 65,707.30

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Solution

The fourth proportional to 87,256.14, 120,418.53 and 65,707.30 is: 90,679.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,256.14 : 120,418.53 = 65,707.30 : x
  2. Step 2: Convert to fraction form
    87,256.14/120,418.53 = 65,707.30/x
  3. Step 3: Cross multiply
    87,256.14x = 120,418.53 × 65,707.30
  4. Step 4: Simplify right side
    87,256.14x = 7,912,376,476.27
  5. Step 5: Solve for x
    x = 7,912,376,476.27/87,256.14
  6. Step 6: Final answer
    x = 90,679.88

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1.5x scale

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.