Home / 126,148.20-174,077.88-78,400.50

Finding the Fourth Proportional to 126,148.20, 174,077.88 and 78,400.50

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Solution

The fourth proportional to 126,148.20, 174,077.88 and 78,400.50 is: 108,188.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,148.20 : 174,077.88 = 78,400.50 : x
  2. Step 2: Convert to fraction form
    126,148.20/174,077.88 = 78,400.50/x
  3. Step 3: Cross multiply
    126,148.20x = 174,077.88 × 78,400.50
  4. Step 4: Simplify right side
    126,148.20x = 13,647,792,830.94
  5. Step 5: Solve for x
    x = 13,647,792,830.94/126,148.20
  6. Step 6: Final answer
    x = 108,188.57

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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.