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Finding the Fourth Proportional to 159,988.32, 220,764.96 and 88,364.07

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Solution

The fourth proportional to 159,988.32, 220,764.96 and 88,364.07 is: 121,931.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,988.32 : 220,764.96 = 88,364.07 : x
  2. Step 2: Convert to fraction form
    159,988.32/220,764.96 = 88,364.07/x
  3. Step 3: Cross multiply
    159,988.32x = 220,764.96 × 88,364.07
  4. Step 4: Simplify right side
    159,988.32x = 19,507,690,378.99
  5. Step 5: Solve for x
    x = 19,507,690,378.99/159,988.32
  6. Step 6: Final answer
    x = 121,931.97

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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.