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Finding the Fourth Proportional to 135,898.88, 187,540.52 and 75,479.36

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Solution

The fourth proportional to 135,898.88, 187,540.52 and 75,479.36 is: 104,161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,898.88 : 187,540.52 = 75,479.36 : x
  2. Step 2: Convert to fraction form
    135,898.88/187,540.52 = 75,479.36/x
  3. Step 3: Cross multiply
    135,898.88x = 187,540.52 × 75,479.36
  4. Step 4: Simplify right side
    135,898.88x = 14,155,437,108.57
  5. Step 5: Solve for x
    x = 14,155,437,108.57/135,898.88
  6. Step 6: Final answer
    x = 104,161.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.