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Finding the Fourth Proportional to 159,877.65, 220,631.19 and 88,257.72

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Solution

The fourth proportional to 159,877.65, 220,631.19 and 88,257.72 is: 121,795.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,877.65 : 220,631.19 = 88,257.72 : x
  2. Step 2: Convert to fraction form
    159,877.65/220,631.19 = 88,257.72/x
  3. Step 3: Cross multiply
    159,877.65x = 220,631.19 × 88,257.72
  4. Step 4: Simplify right side
    159,877.65x = 19,472,405,790.29
  5. Step 5: Solve for x
    x = 19,472,405,790.29/159,877.65
  6. Step 6: Final answer
    x = 121,795.67

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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.