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Finding the Fourth Proportional to 126,042.67, 173,699.40 and 90,170.40

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Solution

The fourth proportional to 126,042.67, 173,699.40 and 90,170.40 is: 124,263.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,042.67 : 173,699.40 = 90,170.40 : x
  2. Step 2: Convert to fraction form
    126,042.67/173,699.40 = 90,170.40/x
  3. Step 3: Cross multiply
    126,042.67x = 173,699.40 × 90,170.40
  4. Step 4: Simplify right side
    126,042.67x = 15,662,544,377.76
  5. Step 5: Solve for x
    x = 15,662,544,377.76/126,042.67
  6. Step 6: Final answer
    x = 124,263.83

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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.