Home / 90,512.25-125,037.19-72,339.70

Finding the Fourth Proportional to 90,512.25, 125,037.19 and 72,339.70

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Solution

The fourth proportional to 90,512.25, 125,037.19 and 72,339.70 is: 99,932.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,512.25 : 125,037.19 = 72,339.70 : x
  2. Step 2: Convert to fraction form
    90,512.25/125,037.19 = 72,339.70/x
  3. Step 3: Cross multiply
    90,512.25x = 125,037.19 × 72,339.70
  4. Step 4: Simplify right side
    90,512.25x = 9,045,152,813.44
  5. Step 5: Solve for x
    x = 9,045,152,813.44/90,512.25
  6. Step 6: Final answer
    x = 99,932.91

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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.