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Finding the Fourth Proportional to 90,908.56, 125,451.48 and 88,225.84

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Solution

The fourth proportional to 90,908.56, 125,451.48 and 88,225.84 is: 121,749.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,908.56 : 125,451.48 = 88,225.84 : x
  2. Step 2: Convert to fraction form
    90,908.56/125,451.48 = 88,225.84/x
  3. Step 3: Cross multiply
    90,908.56x = 125,451.48 × 88,225.84
  4. Step 4: Simplify right side
    90,908.56x = 11,068,062,202.24
  5. Step 5: Solve for x
    x = 11,068,062,202.24/90,908.56
  6. Step 6: Final answer
    x = 121,749.40

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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.