Home / 139,209.12-192,109.08-75,546.88

Finding the Fourth Proportional to 139,209.12, 192,109.08 and 75,546.88

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Solution

The fourth proportional to 139,209.12, 192,109.08 and 75,546.88 is: 104,254.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,209.12 : 192,109.08 = 75,546.88 : x
  2. Step 2: Convert to fraction form
    139,209.12/192,109.08 = 75,546.88/x
  3. Step 3: Cross multiply
    139,209.12x = 192,109.08 × 75,546.88
  4. Step 4: Simplify right side
    139,209.12x = 14,513,241,613.67
  5. Step 5: Solve for x
    x = 14,513,241,613.67/139,209.12
  6. Step 6: Final answer
    x = 104,254.96

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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.