Home / 108,138.18-149,229.63-60,390.30

Finding the Fourth Proportional to 108,138.18, 149,229.63 and 60,390.30

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Solution

The fourth proportional to 108,138.18, 149,229.63 and 60,390.30 is: 83,338.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,138.18 : 149,229.63 = 60,390.30 : x
  2. Step 2: Convert to fraction form
    108,138.18/149,229.63 = 60,390.30/x
  3. Step 3: Cross multiply
    108,138.18x = 149,229.63 × 60,390.30
  4. Step 4: Simplify right side
    108,138.18x = 9,012,022,124.59
  5. Step 5: Solve for x
    x = 9,012,022,124.59/108,138.18
  6. Step 6: Final answer
    x = 83,338.02

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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.