Home / 108,213.39-162,378.11-45,077.13

Finding the Fourth Proportional to 108,213.39, 162,378.11 and 45,077.13

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Solution

The fourth proportional to 108,213.39, 162,378.11 and 45,077.13 is: 67,639.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,213.39 : 162,378.11 = 45,077.13 : x
  2. Step 2: Convert to fraction form
    108,213.39/162,378.11 = 45,077.13/x
  3. Step 3: Cross multiply
    108,213.39x = 162,378.11 × 45,077.13
  4. Step 4: Simplify right side
    108,213.39x = 7,319,539,286.32
  5. Step 5: Solve for x
    x = 7,319,539,286.32/108,213.39
  6. Step 6: Final answer
    x = 67,639.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.