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Finding the Fourth Proportional to 159,659.76, 220,322.55 and 90,740.25

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Solution

The fourth proportional to 159,659.76, 220,322.55 and 90,740.25 is: 125,217.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,659.76 : 220,322.55 = 90,740.25 : x
  2. Step 2: Convert to fraction form
    159,659.76/220,322.55 = 90,740.25/x
  3. Step 3: Cross multiply
    159,659.76x = 220,322.55 × 90,740.25
  4. Step 4: Simplify right side
    159,659.76x = 19,992,123,267.64
  5. Step 5: Solve for x
    x = 19,992,123,267.64/159,659.76
  6. Step 6: Final answer
    x = 125,217.04

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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.