Home / 90,081.60-124,347.66-80,633.76

Finding the Fourth Proportional to 90,081.60, 124,347.66 and 80,633.76

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Solution

The fourth proportional to 90,081.60, 124,347.66 and 80,633.76 is: 111,305.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,081.60 : 124,347.66 = 80,633.76 : x
  2. Step 2: Convert to fraction form
    90,081.60/124,347.66 = 80,633.76/x
  3. Step 3: Cross multiply
    90,081.60x = 124,347.66 × 80,633.76
  4. Step 4: Simplify right side
    90,081.60x = 10,026,619,373.00
  5. Step 5: Solve for x
    x = 10,026,619,373.00/90,081.60
  6. Step 6: Final answer
    x = 111,305.96

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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.