Home / 91,149.12-125,794.08-57,162.72

Finding the Fourth Proportional to 91,149.12, 125,794.08 and 57,162.72

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Solution

The fourth proportional to 91,149.12, 125,794.08 and 57,162.72 is: 78,889.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,149.12 : 125,794.08 = 57,162.72 : x
  2. Step 2: Convert to fraction form
    91,149.12/125,794.08 = 57,162.72/x
  3. Step 3: Cross multiply
    91,149.12x = 125,794.08 × 57,162.72
  4. Step 4: Simplify right side
    91,149.12x = 7,190,731,772.70
  5. Step 5: Solve for x
    x = 7,190,731,772.70/91,149.12
  6. Step 6: Final answer
    x = 78,889.76

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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.