Home / 90,158.15-124,305.17-57,835.78

Finding the Fourth Proportional to 90,158.15, 124,305.17 and 57,835.78

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Solution

The fourth proportional to 90,158.15, 124,305.17 and 57,835.78 is: 79,740.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,158.15 : 124,305.17 = 57,835.78 : x
  2. Step 2: Convert to fraction form
    90,158.15/124,305.17 = 57,835.78/x
  3. Step 3: Cross multiply
    90,158.15x = 124,305.17 × 57,835.78
  4. Step 4: Simplify right side
    90,158.15x = 7,189,285,865.04
  5. Step 5: Solve for x
    x = 7,189,285,865.04/90,158.15
  6. Step 6: Final answer
    x = 79,740.83

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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.