Home / 87,329.34-120,238.16-79,347.68

Finding the Fourth Proportional to 87,329.34, 120,238.16 and 79,347.68

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Solution

The fourth proportional to 87,329.34, 120,238.16 and 79,347.68 is: 109,248.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,329.34 : 120,238.16 = 79,347.68 : x
  2. Step 2: Convert to fraction form
    87,329.34/120,238.16 = 79,347.68/x
  3. Step 3: Cross multiply
    87,329.34x = 120,238.16 × 79,347.68
  4. Step 4: Simplify right side
    87,329.34x = 9,540,619,043.47
  5. Step 5: Solve for x
    x = 9,540,619,043.47/87,329.34
  6. Step 6: Final answer
    x = 109,248.72

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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.