Home / 108,872.96-163,156.28-86,587.43

Finding the Fourth Proportional to 108,872.96, 163,156.28 and 86,587.43

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Solution

The fourth proportional to 108,872.96, 163,156.28 and 86,587.43 is: 129,759.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,872.96 : 163,156.28 = 86,587.43 : x
  2. Step 2: Convert to fraction form
    108,872.96/163,156.28 = 86,587.43/x
  3. Step 3: Cross multiply
    108,872.96x = 163,156.28 × 86,587.43
  4. Step 4: Simplify right side
    108,872.96x = 14,127,281,724.84
  5. Step 5: Solve for x
    x = 14,127,281,724.84/108,872.96
  6. Step 6: Final answer
    x = 129,759.33

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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.