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Finding the Fourth Proportional to 125,531.88, 188,281.44 and 55,394.82

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Solution

The fourth proportional to 125,531.88, 188,281.44 and 55,394.82 is: 83,085.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,531.88 : 188,281.44 = 55,394.82 : x
  2. Step 2: Convert to fraction form
    125,531.88/188,281.44 = 55,394.82/x
  3. Step 3: Cross multiply
    125,531.88x = 188,281.44 × 55,394.82
  4. Step 4: Simplify right side
    125,531.88x = 10,429,816,478.14
  5. Step 5: Solve for x
    x = 10,429,816,478.14/125,531.88
  6. Step 6: Final answer
    x = 83,085.00

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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.