Home / 108,449.75-149,639.38-68,140.16

Finding the Fourth Proportional to 108,449.75, 149,639.38 and 68,140.16

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Solution

The fourth proportional to 108,449.75, 149,639.38 and 68,140.16 is: 94,020.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,449.75 : 149,639.38 = 68,140.16 : x
  2. Step 2: Convert to fraction form
    108,449.75/149,639.38 = 68,140.16/x
  3. Step 3: Cross multiply
    108,449.75x = 149,639.38 × 68,140.16
  4. Step 4: Simplify right side
    108,449.75x = 10,196,451,295.50
  5. Step 5: Solve for x
    x = 10,196,451,295.50/108,449.75
  6. Step 6: Final answer
    x = 94,020.05

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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.