Home / 108,103.13-149,139.36-72,236.33

Finding the Fourth Proportional to 108,103.13, 149,139.36 and 72,236.33

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Solution

The fourth proportional to 108,103.13, 149,139.36 and 72,236.33 is: 99,657.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,103.13 : 149,139.36 = 72,236.33 : x
  2. Step 2: Convert to fraction form
    108,103.13/149,139.36 = 72,236.33/x
  3. Step 3: Cross multiply
    108,103.13x = 149,139.36 × 72,236.33
  4. Step 4: Simplify right side
    108,103.13x = 10,773,279,279.25
  5. Step 5: Solve for x
    x = 10,773,279,279.25/108,103.13
  6. Step 6: Final answer
    x = 99,657.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.