Home / 108,891.12-150,294.24-71,143.68

Finding the Fourth Proportional to 108,891.12, 150,294.24 and 71,143.68

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Solution

The fourth proportional to 108,891.12, 150,294.24 and 71,143.68 is: 98,194.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,891.12 : 150,294.24 = 71,143.68 : x
  2. Step 2: Convert to fraction form
    108,891.12/150,294.24 = 71,143.68/x
  3. Step 3: Cross multiply
    108,891.12x = 150,294.24 × 71,143.68
  4. Step 4: Simplify right side
    108,891.12x = 10,692,485,316.40
  5. Step 5: Solve for x
    x = 10,692,485,316.40/108,891.12
  6. Step 6: Final answer
    x = 98,194.28

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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.