Home / 81,273.11-122,518.79-75,854.21

Finding the Fourth Proportional to 81,273.11, 122,518.79 and 75,854.21

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Solution

The fourth proportional to 81,273.11, 122,518.79 and 75,854.21 is: 114,349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,273.11 : 122,518.79 = 75,854.21 : x
  2. Step 2: Convert to fraction form
    81,273.11/122,518.79 = 75,854.21/x
  3. Step 3: Cross multiply
    81,273.11x = 122,518.79 × 75,854.21
  4. Step 4: Simplify right side
    81,273.11x = 9,293,565,033.74
  5. Step 5: Solve for x
    x = 9,293,565,033.74/81,273.11
  6. Step 6: Final answer
    x = 114,349.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.