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Finding the Fourth Proportional to 124,571.76, 171,912.68 and 67,986.76

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Solution

The fourth proportional to 124,571.76, 171,912.68 and 67,986.76 is: 93,823.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,571.76 : 171,912.68 = 67,986.76 : x
  2. Step 2: Convert to fraction form
    124,571.76/171,912.68 = 67,986.76/x
  3. Step 3: Cross multiply
    124,571.76x = 171,912.68 × 67,986.76
  4. Step 4: Simplify right side
    124,571.76x = 11,687,786,116.12
  5. Step 5: Solve for x
    x = 11,687,786,116.12/124,571.76
  6. Step 6: Final answer
    x = 93,823.72

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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.