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Finding the Fourth Proportional to 125,114.63, 187,201.09 and 87,747.64

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Solution

The fourth proportional to 125,114.63, 187,201.09 and 87,747.64 is: 131,291.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,114.63 : 187,201.09 = 87,747.64 : x
  2. Step 2: Convert to fraction form
    125,114.63/187,201.09 = 87,747.64/x
  3. Step 3: Cross multiply
    125,114.63x = 187,201.09 × 87,747.64
  4. Step 4: Simplify right side
    125,114.63x = 16,426,453,494.61
  5. Step 5: Solve for x
    x = 16,426,453,494.61/125,114.63
  6. Step 6: Final answer
    x = 131,291.23

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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.