Home / 90,696.69-136,037.75-57,319.43

Finding the Fourth Proportional to 90,696.69, 136,037.75 and 57,319.43

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Solution

The fourth proportional to 90,696.69, 136,037.75 and 57,319.43 is: 85,974.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,696.69 : 136,037.75 = 57,319.43 : x
  2. Step 2: Convert to fraction form
    90,696.69/136,037.75 = 57,319.43/x
  3. Step 3: Cross multiply
    90,696.69x = 136,037.75 × 57,319.43
  4. Step 4: Simplify right side
    90,696.69x = 7,797,605,321.70
  5. Step 5: Solve for x
    x = 7,797,605,321.70/90,696.69
  6. Step 6: Final answer
    x = 85,974.53

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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.