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Finding the Fourth Proportional to 108,515.92, 162,822.48 and 86,257.12

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Solution

The fourth proportional to 108,515.92, 162,822.48 and 86,257.12 is: 129,424.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,515.92 : 162,822.48 = 86,257.12 : x
  2. Step 2: Convert to fraction form
    108,515.92/162,822.48 = 86,257.12/x
  3. Step 3: Cross multiply
    108,515.92x = 162,822.48 × 86,257.12
  4. Step 4: Simplify right side
    108,515.92x = 14,044,598,196.06
  5. Step 5: Solve for x
    x = 14,044,598,196.06/108,515.92
  6. Step 6: Final answer
    x = 129,424.31

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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.