Home / 90,716.12-136,076.90-75,043.52

Finding the Fourth Proportional to 90,716.12, 136,076.90 and 75,043.52

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Solution

The fourth proportional to 90,716.12, 136,076.90 and 75,043.52 is: 112,567.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,716.12 : 136,076.90 = 75,043.52 : x
  2. Step 2: Convert to fraction form
    90,716.12/136,076.90 = 75,043.52/x
  3. Step 3: Cross multiply
    90,716.12x = 136,076.90 × 75,043.52
  4. Step 4: Simplify right side
    90,716.12x = 10,211,689,566.69
  5. Step 5: Solve for x
    x = 10,211,689,566.69/90,716.12
  6. Step 6: Final answer
    x = 112,567.53

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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.