Home / 112,480.48-155,183.76-72,191.20

Finding the Fourth Proportional to 112,480.48, 155,183.76 and 72,191.20

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Solution

The fourth proportional to 112,480.48, 155,183.76 and 72,191.20 is: 99,598.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,480.48 : 155,183.76 = 72,191.20 : x
  2. Step 2: Convert to fraction form
    112,480.48/155,183.76 = 72,191.20/x
  3. Step 3: Cross multiply
    112,480.48x = 155,183.76 × 72,191.20
  4. Step 4: Simplify right side
    112,480.48x = 11,202,901,854.91
  5. Step 5: Solve for x
    x = 11,202,901,854.91/112,480.48
  6. Step 6: Final answer
    x = 99,598.63

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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.