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Finding the Fourth Proportional to 121,879.56, 182,807.82 and 38,758.92

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Solution

The fourth proportional to 121,879.56, 182,807.82 and 38,758.92 is: 58,134.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,879.56 : 182,807.82 = 38,758.92 : x
  2. Step 2: Convert to fraction form
    121,879.56/182,807.82 = 38,758.92/x
  3. Step 3: Cross multiply
    121,879.56x = 182,807.82 × 38,758.92
  4. Step 4: Simplify right side
    121,879.56x = 7,085,433,670.75
  5. Step 5: Solve for x
    x = 7,085,433,670.75/121,879.56
  6. Step 6: Final answer
    x = 58,134.72

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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.