Home / 122,613.28-169,221.96-74,856.40

Finding the Fourth Proportional to 122,613.28, 169,221.96 and 74,856.40

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Solution

The fourth proportional to 122,613.28, 169,221.96 and 74,856.40 is: 103,311.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,613.28 : 169,221.96 = 74,856.40 : x
  2. Step 2: Convert to fraction form
    122,613.28/169,221.96 = 74,856.40/x
  3. Step 3: Cross multiply
    122,613.28x = 169,221.96 × 74,856.40
  4. Step 4: Simplify right side
    122,613.28x = 12,667,346,726.54
  5. Step 5: Solve for x
    x = 12,667,346,726.54/122,613.28
  6. Step 6: Final answer
    x = 103,311.38

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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.