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Finding the Fourth Proportional to 108,115.54, 149,193 and 62,790.40

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Solution

The fourth proportional to 108,115.54, 149,193 and 62,790.40 is: 86,647.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,115.54 : 149,193 = 62,790.40 : x
  2. Step 2: Convert to fraction form
    108,115.54/149,193 = 62,790.40/x
  3. Step 3: Cross multiply
    108,115.54x = 149,193 × 62,790.40
  4. Step 4: Simplify right side
    108,115.54x = 9,367,888,147.20
  5. Step 5: Solve for x
    x = 9,367,888,147.20/108,115.54
  6. Step 6: Final answer
    x = 86,647.01

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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.