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Finding the Fourth Proportional to 125,630.50, 188,532.15 and 51,758.50

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Solution

The fourth proportional to 125,630.50, 188,532.15 and 51,758.50 is: 77,673.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,630.50 : 188,532.15 = 51,758.50 : x
  2. Step 2: Convert to fraction form
    125,630.50/188,532.15 = 51,758.50/x
  3. Step 3: Cross multiply
    125,630.50x = 188,532.15 × 51,758.50
  4. Step 4: Simplify right side
    125,630.50x = 9,758,141,285.78
  5. Step 5: Solve for x
    x = 9,758,141,285.78/125,630.50
  6. Step 6: Final answer
    x = 77,673.35

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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.