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Finding the Fourth Proportional to 104,909.54, 144,775.19 and 57,162.90

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Solution

The fourth proportional to 104,909.54, 144,775.19 and 57,162.90 is: 78,884.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,909.54 : 144,775.19 = 57,162.90 : x
  2. Step 2: Convert to fraction form
    104,909.54/144,775.19 = 57,162.90/x
  3. Step 3: Cross multiply
    104,909.54x = 144,775.19 × 57,162.90
  4. Step 4: Simplify right side
    104,909.54x = 8,275,769,708.45
  5. Step 5: Solve for x
    x = 8,275,769,708.45/104,909.54
  6. Step 6: Final answer
    x = 78,884.82

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1.5x scale

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.