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Finding the Fourth Proportional to 159,572.28, 220,211.28 and 87,955.08

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Solution

The fourth proportional to 159,572.28, 220,211.28 and 87,955.08 is: 121,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,572.28 : 220,211.28 = 87,955.08 : x
  2. Step 2: Convert to fraction form
    159,572.28/220,211.28 = 87,955.08/x
  3. Step 3: Cross multiply
    159,572.28x = 220,211.28 × 87,955.08
  4. Step 4: Simplify right side
    159,572.28x = 19,368,700,749.30
  5. Step 5: Solve for x
    x = 19,368,700,749.30/159,572.28
  6. Step 6: Final answer
    x = 121,378.86

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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.