Home / 185,711.40-278,534.70-67,321.80

Finding the Fourth Proportional to 185,711.40, 278,534.70 and 67,321.80

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Solution

The fourth proportional to 185,711.40, 278,534.70 and 67,321.80 is: 100,970.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,711.40 : 278,534.70 = 67,321.80 : x
  2. Step 2: Convert to fraction form
    185,711.40/278,534.70 = 67,321.80/x
  3. Step 3: Cross multiply
    185,711.40x = 278,534.70 × 67,321.80
  4. Step 4: Simplify right side
    185,711.40x = 18,751,457,366.46
  5. Step 5: Solve for x
    x = 18,751,457,366.46/185,711.40
  6. Step 6: Final answer
    x = 100,970.95

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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.