Home / 126,811.60-190,221.78-60,217.36

Finding the Fourth Proportional to 126,811.60, 190,221.78 and 60,217.36

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Solution

The fourth proportional to 126,811.60, 190,221.78 and 60,217.36 is: 90,328.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,811.60 : 190,221.78 = 60,217.36 : x
  2. Step 2: Convert to fraction form
    126,811.60/190,221.78 = 60,217.36/x
  3. Step 3: Cross multiply
    126,811.60x = 190,221.78 × 60,217.36
  4. Step 4: Simplify right side
    126,811.60x = 11,454,653,406.10
  5. Step 5: Solve for x
    x = 11,454,653,406.10/126,811.60
  6. Step 6: Final answer
    x = 90,328.12

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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.