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Finding the Fourth Proportional to 108,157.71, 162,010.27 and 86,983.30

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Solution

The fourth proportional to 108,157.71, 162,010.27 and 86,983.30 is: 130,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,157.71 : 162,010.27 = 86,983.30 : x
  2. Step 2: Convert to fraction form
    108,157.71/162,010.27 = 86,983.30/x
  3. Step 3: Cross multiply
    108,157.71x = 162,010.27 × 86,983.30
  4. Step 4: Simplify right side
    108,157.71x = 14,092,186,673.52
  5. Step 5: Solve for x
    x = 14,092,186,673.52/108,157.71
  6. Step 6: Final answer
    x = 130,292.95

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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.