Home / 84,105.73-126,158.60-31,508.38

Finding the Fourth Proportional to 84,105.73, 126,158.60 and 31,508.38

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Solution

The fourth proportional to 84,105.73, 126,158.60 and 31,508.38 is: 47,262.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,105.73 : 126,158.60 = 31,508.38 : x
  2. Step 2: Convert to fraction form
    84,105.73/126,158.60 = 31,508.38/x
  3. Step 3: Cross multiply
    84,105.73x = 126,158.60 × 31,508.38
  4. Step 4: Simplify right side
    84,105.73x = 3,975,053,109.07
  5. Step 5: Solve for x
    x = 3,975,053,109.07/84,105.73
  6. Step 6: Final answer
    x = 47,262.57

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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.