Home / 80,867.52-120,588.78-75,257.82

Finding the Fourth Proportional to 80,867.52, 120,588.78 and 75,257.82

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Solution

The fourth proportional to 80,867.52, 120,588.78 and 75,257.82 is: 112,223.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,867.52 : 120,588.78 = 75,257.82 : x
  2. Step 2: Convert to fraction form
    80,867.52/120,588.78 = 75,257.82/x
  3. Step 3: Cross multiply
    80,867.52x = 120,588.78 × 75,257.82
  4. Step 4: Simplify right side
    80,867.52x = 9,075,248,699.26
  5. Step 5: Solve for x
    x = 9,075,248,699.26/80,867.52
  6. Step 6: Final answer
    x = 112,223.66

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.