Home / 129,538.38-193,624.08-112,538.10

Finding the Fourth Proportional to 129,538.38, 193,624.08 and 112,538.10

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Solution

The fourth proportional to 129,538.38, 193,624.08 and 112,538.10 is: 168,213.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,538.38 : 193,624.08 = 112,538.10 : x
  2. Step 2: Convert to fraction form
    129,538.38/193,624.08 = 112,538.10/x
  3. Step 3: Cross multiply
    129,538.38x = 193,624.08 × 112,538.10
  4. Step 4: Simplify right side
    129,538.38x = 21,790,086,077.45
  5. Step 5: Solve for x
    x = 21,790,086,077.45/129,538.38
  6. Step 6: Final answer
    x = 168,213.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.