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Finding the Fourth Proportional to 108,510.70, 162,569.21 and 80,117.96

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Solution

The fourth proportional to 108,510.70, 162,569.21 and 80,117.96 is: 120,031.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,510.70 : 162,569.21 = 80,117.96 : x
  2. Step 2: Convert to fraction form
    108,510.70/162,569.21 = 80,117.96/x
  3. Step 3: Cross multiply
    108,510.70x = 162,569.21 × 80,117.96
  4. Step 4: Simplify right side
    108,510.70x = 13,024,713,063.42
  5. Step 5: Solve for x
    x = 13,024,713,063.42/108,510.70
  6. Step 6: Final answer
    x = 120,031.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.