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Finding the Fourth Proportional to 125,901.63, 173,818.17 and 78,181.29

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Solution

The fourth proportional to 125,901.63, 173,818.17 and 78,181.29 is: 107,936.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,901.63 : 173,818.17 = 78,181.29 : x
  2. Step 2: Convert to fraction form
    125,901.63/173,818.17 = 78,181.29/x
  3. Step 3: Cross multiply
    125,901.63x = 173,818.17 × 78,181.29
  4. Step 4: Simplify right side
    125,901.63x = 13,589,328,756.04
  5. Step 5: Solve for x
    x = 13,589,328,756.04/125,901.63
  6. Step 6: Final answer
    x = 107,936.08

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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.