Home / 138,839.60-191,633.56-124,667.76

Finding the Fourth Proportional to 138,839.60, 191,633.56 and 124,667.76

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Solution

The fourth proportional to 138,839.60, 191,633.56 and 124,667.76 is: 172,072.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,839.60 : 191,633.56 = 124,667.76 : x
  2. Step 2: Convert to fraction form
    138,839.60/191,633.56 = 124,667.76/x
  3. Step 3: Cross multiply
    138,839.60x = 191,633.56 × 124,667.76
  4. Step 4: Simplify right side
    138,839.60x = 23,890,526,666.03
  5. Step 5: Solve for x
    x = 23,890,526,666.03/138,839.60
  6. Step 6: Final answer
    x = 172,072.86

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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.