Home / 112,358.20-155,116.59-76,600.75

Finding the Fourth Proportional to 112,358.20, 155,116.59 and 76,600.75

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Solution

The fourth proportional to 112,358.20, 155,116.59 and 76,600.75 is: 105,751.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,358.20 : 155,116.59 = 76,600.75 : x
  2. Step 2: Convert to fraction form
    112,358.20/155,116.59 = 76,600.75/x
  3. Step 3: Cross multiply
    112,358.20x = 155,116.59 × 76,600.75
  4. Step 4: Simplify right side
    112,358.20x = 11,882,047,131.44
  5. Step 5: Solve for x
    x = 11,882,047,131.44/112,358.20
  6. Step 6: Final answer
    x = 105,751.49

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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.