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Finding the Fourth Proportional to 125,752.68, 188,641.32 and 45,812.36

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Solution

The fourth proportional to 125,752.68, 188,641.32 and 45,812.36 is: 68,723.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,752.68 : 188,641.32 = 45,812.36 : x
  2. Step 2: Convert to fraction form
    125,752.68/188,641.32 = 45,812.36/x
  3. Step 3: Cross multiply
    125,752.68x = 188,641.32 × 45,812.36
  4. Step 4: Simplify right side
    125,752.68x = 8,642,104,062.72
  5. Step 5: Solve for x
    x = 8,642,104,062.72/125,752.68
  6. Step 6: Final answer
    x = 68,723.02

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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.