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Finding the Fourth Proportional to 110,879.28, 152,960.02 and 72,621.76

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Solution

The fourth proportional to 110,879.28, 152,960.02 and 72,621.76 is: 100,183.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,879.28 : 152,960.02 = 72,621.76 : x
  2. Step 2: Convert to fraction form
    110,879.28/152,960.02 = 72,621.76/x
  3. Step 3: Cross multiply
    110,879.28x = 152,960.02 × 72,621.76
  4. Step 4: Simplify right side
    110,879.28x = 11,108,225,862.04
  5. Step 5: Solve for x
    x = 11,108,225,862.04/110,879.28
  6. Step 6: Final answer
    x = 100,183.06

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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.