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Finding the Fourth Proportional to 135,449.32, 186,920.64 and 75,018.64

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Solution

The fourth proportional to 135,449.32, 186,920.64 and 75,018.64 is: 103,526.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,449.32 : 186,920.64 = 75,018.64 : x
  2. Step 2: Convert to fraction form
    135,449.32/186,920.64 = 75,018.64/x
  3. Step 3: Cross multiply
    135,449.32x = 186,920.64 × 75,018.64
  4. Step 4: Simplify right side
    135,449.32x = 14,022,532,200.73
  5. Step 5: Solve for x
    x = 14,022,532,200.73/135,449.32
  6. Step 6: Final answer
    x = 103,526.04

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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.