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Finding the Fourth Proportional to 108,376.97, 162,355.12 and 79,862.18

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Solution

The fourth proportional to 108,376.97, 162,355.12 and 79,862.18 is: 119,638.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,376.97 : 162,355.12 = 79,862.18 : x
  2. Step 2: Convert to fraction form
    108,376.97/162,355.12 = 79,862.18/x
  3. Step 3: Cross multiply
    108,376.97x = 162,355.12 × 79,862.18
  4. Step 4: Simplify right side
    108,376.97x = 12,966,032,805.93
  5. Step 5: Solve for x
    x = 12,966,032,805.93/108,376.97
  6. Step 6: Final answer
    x = 119,638.27

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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.