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Finding the Fourth Proportional to 126,842.70, 175,045.39 and 73,118.70

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Solution

The fourth proportional to 126,842.70, 175,045.39 and 73,118.70 is: 100,905.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,842.70 : 175,045.39 = 73,118.70 : x
  2. Step 2: Convert to fraction form
    126,842.70/175,045.39 = 73,118.70/x
  3. Step 3: Cross multiply
    126,842.70x = 175,045.39 × 73,118.70
  4. Step 4: Simplify right side
    126,842.70x = 12,799,091,357.79
  5. Step 5: Solve for x
    x = 12,799,091,357.79/126,842.70
  6. Step 6: Final answer
    x = 100,905.23

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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.