Home / 112,358.20-155,116.60-76,600.74

Finding the Fourth Proportional to 112,358.20, 155,116.60 and 76,600.74

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Solution

The fourth proportional to 112,358.20, 155,116.60 and 76,600.74 is: 105,751.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,358.20 : 155,116.60 = 76,600.74 : x
  2. Step 2: Convert to fraction form
    112,358.20/155,116.60 = 76,600.74/x
  3. Step 3: Cross multiply
    112,358.20x = 155,116.60 × 76,600.74
  4. Step 4: Simplify right side
    112,358.20x = 11,882,046,346.28
  5. Step 5: Solve for x
    x = 11,882,046,346.28/112,358.20
  6. Step 6: Final answer
    x = 105,751.48

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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.