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Finding the Fourth Proportional to 108,514.92, 162,820.98 and 86,256.12

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Solution

The fourth proportional to 108,514.92, 162,820.98 and 86,256.12 is: 129,422.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,514.92 : 162,820.98 = 86,256.12 : x
  2. Step 2: Convert to fraction form
    108,514.92/162,820.98 = 86,256.12/x
  3. Step 3: Cross multiply
    108,514.92x = 162,820.98 × 86,256.12
  4. Step 4: Simplify right side
    108,514.92x = 14,044,305,989.40
  5. Step 5: Solve for x
    x = 14,044,305,989.40/108,514.92
  6. Step 6: Final answer
    x = 129,422.81

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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.