Home / 131,613.12-181,581.12-74,983.68

Finding the Fourth Proportional to 131,613.12, 181,581.12 and 74,983.68

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Solution

The fourth proportional to 131,613.12, 181,581.12 and 74,983.68 is: 103,451.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,613.12 : 181,581.12 = 74,983.68 : x
  2. Step 2: Convert to fraction form
    131,613.12/181,581.12 = 74,983.68/x
  3. Step 3: Cross multiply
    131,613.12x = 181,581.12 × 74,983.68
  4. Step 4: Simplify right side
    131,613.12x = 13,615,620,596.12
  5. Step 5: Solve for x
    x = 13,615,620,596.12/131,613.12
  6. Step 6: Final answer
    x = 103,451.85

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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.