Home / 108,904.26-163,203.14-86,618.72

Finding the Fourth Proportional to 108,904.26, 163,203.14 and 86,618.72

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Solution

The fourth proportional to 108,904.26, 163,203.14 and 86,618.72 is: 129,806.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,904.26 : 163,203.14 = 86,618.72 : x
  2. Step 2: Convert to fraction form
    108,904.26/163,203.14 = 86,618.72/x
  3. Step 3: Cross multiply
    108,904.26x = 163,203.14 × 86,618.72
  4. Step 4: Simplify right side
    108,904.26x = 14,136,447,086.78
  5. Step 5: Solve for x
    x = 14,136,447,086.78/108,904.26
  6. Step 6: Final answer
    x = 129,806.19

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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.