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Finding the Fourth Proportional to 108,158.15, 162,010.92 and 86,983.73

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Solution

The fourth proportional to 108,158.15, 162,010.92 and 86,983.73 is: 130,293.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,158.15 : 162,010.92 = 86,983.73 : x
  2. Step 2: Convert to fraction form
    108,158.15/162,010.92 = 86,983.73/x
  3. Step 3: Cross multiply
    108,158.15x = 162,010.92 × 86,983.73
  4. Step 4: Simplify right side
    108,158.15x = 14,092,314,744.82
  5. Step 5: Solve for x
    x = 14,092,314,744.82/108,158.15
  6. Step 6: Final answer
    x = 130,293.61

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1.5x scale

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.