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Finding the Fourth Proportional to 125,750.16, 188,637.57 and 45,809.85

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Solution

The fourth proportional to 125,750.16, 188,637.57 and 45,809.85 is: 68,719.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,750.16 : 188,637.57 = 45,809.85 : x
  2. Step 2: Convert to fraction form
    125,750.16/188,637.57 = 45,809.85/x
  3. Step 3: Cross multiply
    125,750.16x = 188,637.57 × 45,809.85
  4. Step 4: Simplify right side
    125,750.16x = 8,641,458,786.06
  5. Step 5: Solve for x
    x = 8,641,458,786.06/125,750.16
  6. Step 6: Final answer
    x = 68,719.27

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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.