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Finding the Fourth Proportional to 125,689.56, 188,505.16 and 36,919.20

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Solution

The fourth proportional to 125,689.56, 188,505.16 and 36,919.20 is: 55,370.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,689.56 : 188,505.16 = 36,919.20 : x
  2. Step 2: Convert to fraction form
    125,689.56/188,505.16 = 36,919.20/x
  3. Step 3: Cross multiply
    125,689.56x = 188,505.16 × 36,919.20
  4. Step 4: Simplify right side
    125,689.56x = 6,959,459,703.07
  5. Step 5: Solve for x
    x = 6,959,459,703.07/125,689.56
  6. Step 6: Final answer
    x = 55,370.23

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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.