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Finding the Fourth Proportional to 126,877.92, 175,089.12 and 70,289.76

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Solution

The fourth proportional to 126,877.92, 175,089.12 and 70,289.76 is: 96,998.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,877.92 : 175,089.12 = 70,289.76 : x
  2. Step 2: Convert to fraction form
    126,877.92/175,089.12 = 70,289.76/x
  3. Step 3: Cross multiply
    126,877.92x = 175,089.12 × 70,289.76
  4. Step 4: Simplify right side
    126,877.92x = 12,306,972,223.41
  5. Step 5: Solve for x
    x = 12,306,972,223.41/126,877.92
  6. Step 6: Final answer
    x = 96,998.53

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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.