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Finding the Fourth Proportional to 96,078.80, 143,729.40 and 84,414.80

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Solution

The fourth proportional to 96,078.80, 143,729.40 and 84,414.80 is: 126,280.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,078.80 : 143,729.40 = 84,414.80 : x
  2. Step 2: Convert to fraction form
    96,078.80/143,729.40 = 84,414.80/x
  3. Step 3: Cross multiply
    96,078.80x = 143,729.40 × 84,414.80
  4. Step 4: Simplify right side
    96,078.80x = 12,132,888,555.12
  5. Step 5: Solve for x
    x = 12,132,888,555.12/96,078.80
  6. Step 6: Final answer
    x = 126,280.60

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1.5x scale

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.