Home / 90,734.40-125,179.04-66,917.76

Finding the Fourth Proportional to 90,734.40, 125,179.04 and 66,917.76

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Solution

The fourth proportional to 90,734.40, 125,179.04 and 66,917.76 is: 92,321.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,734.40 : 125,179.04 = 66,917.76 : x
  2. Step 2: Convert to fraction form
    90,734.40/125,179.04 = 66,917.76/x
  3. Step 3: Cross multiply
    90,734.40x = 125,179.04 × 66,917.76
  4. Step 4: Simplify right side
    90,734.40x = 8,376,700,955.75
  5. Step 5: Solve for x
    x = 8,376,700,955.75/90,734.40
  6. Step 6: Final answer
    x = 92,321.11

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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.