Home / 87,850.20-121,437.57-78,383.91

Finding the Fourth Proportional to 87,850.20, 121,437.57 and 78,383.91

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Solution

The fourth proportional to 87,850.20, 121,437.57 and 78,383.91 is: 108,352.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,850.20 : 121,437.57 = 78,383.91 : x
  2. Step 2: Convert to fraction form
    87,850.20/121,437.57 = 78,383.91/x
  3. Step 3: Cross multiply
    87,850.20x = 121,437.57 × 78,383.91
  4. Step 4: Simplify right side
    87,850.20x = 9,518,751,557.50
  5. Step 5: Solve for x
    x = 9,518,751,557.50/87,850.20
  6. Step 6: Final answer
    x = 108,352.08

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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.