Home / 105,517.32-158,288.49-66,077.70

Finding the Fourth Proportional to 105,517.32, 158,288.49 and 66,077.70

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Solution

The fourth proportional to 105,517.32, 158,288.49 and 66,077.70 is: 99,124.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,517.32 : 158,288.49 = 66,077.70 : x
  2. Step 2: Convert to fraction form
    105,517.32/158,288.49 = 66,077.70/x
  3. Step 3: Cross multiply
    105,517.32x = 158,288.49 × 66,077.70
  4. Step 4: Simplify right side
    105,517.32x = 10,459,339,355.67
  5. Step 5: Solve for x
    x = 10,459,339,355.67/105,517.32
  6. Step 6: Final answer
    x = 99,124.38

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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.