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Finding the Fourth Proportional to 189,480.57, 283,974.04 and 77,029.44

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Solution

The fourth proportional to 189,480.57, 283,974.04 and 77,029.44 is: 115,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,480.57 : 283,974.04 = 77,029.44 : x
  2. Step 2: Convert to fraction form
    189,480.57/283,974.04 = 77,029.44/x
  3. Step 3: Cross multiply
    189,480.57x = 283,974.04 × 77,029.44
  4. Step 4: Simplify right side
    189,480.57x = 21,874,361,275.74
  5. Step 5: Solve for x
    x = 21,874,361,275.74/189,480.57
  6. Step 6: Final answer
    x = 115,443.82

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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.