Home / 126,998.71-190,529.75-89,631.78

Finding the Fourth Proportional to 126,998.71, 190,529.75 and 89,631.78

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Solution

The fourth proportional to 126,998.71, 190,529.75 and 89,631.78 is: 134,470.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,998.71 : 190,529.75 = 89,631.78 : x
  2. Step 2: Convert to fraction form
    126,998.71/190,529.75 = 89,631.78/x
  3. Step 3: Cross multiply
    126,998.71x = 190,529.75 × 89,631.78
  4. Step 4: Simplify right side
    126,998.71x = 17,077,520,635.46
  5. Step 5: Solve for x
    x = 17,077,520,635.46/126,998.71
  6. Step 6: Final answer
    x = 134,470.03

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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.