Home / 145,523.28-218,073.72-78,906.96

Finding the Fourth Proportional to 145,523.28, 218,073.72 and 78,906.96

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Solution

The fourth proportional to 145,523.28, 218,073.72 and 78,906.96 is: 118,245.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,523.28 : 218,073.72 = 78,906.96 : x
  2. Step 2: Convert to fraction form
    145,523.28/218,073.72 = 78,906.96/x
  3. Step 3: Cross multiply
    145,523.28x = 218,073.72 × 78,906.96
  4. Step 4: Simplify right side
    145,523.28x = 17,207,534,301.09
  5. Step 5: Solve for x
    x = 17,207,534,301.09/145,523.28
  6. Step 6: Final answer
    x = 118,245.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.