Home / 90,937.15-136,279.29-79,066.60

Finding the Fourth Proportional to 90,937.15, 136,279.29 and 79,066.60

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Solution

The fourth proportional to 90,937.15, 136,279.29 and 79,066.60 is: 118,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,937.15 : 136,279.29 = 79,066.60 : x
  2. Step 2: Convert to fraction form
    90,937.15/136,279.29 = 79,066.60/x
  3. Step 3: Cross multiply
    90,937.15x = 136,279.29 × 79,066.60
  4. Step 4: Simplify right side
    90,937.15x = 10,775,140,110.71
  5. Step 5: Solve for x
    x = 10,775,140,110.71/90,937.15
  6. Step 6: Final answer
    x = 118,489.97

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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.