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Finding the Fourth Proportional to 108,886.50, 163,176.48 and 86,600.97

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Solution

The fourth proportional to 108,886.50, 163,176.48 and 86,600.97 is: 129,779.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,886.50 : 163,176.48 = 86,600.97 : x
  2. Step 2: Convert to fraction form
    108,886.50/163,176.48 = 86,600.97/x
  3. Step 3: Cross multiply
    108,886.50x = 163,176.48 × 86,600.97
  4. Step 4: Simplify right side
    108,886.50x = 14,131,241,449.19
  5. Step 5: Solve for x
    x = 14,131,241,449.19/108,886.50
  6. Step 6: Final answer
    x = 129,779.55

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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.