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Finding the Fourth Proportional to 125,765.38, 173,573.85 and 78,034.11

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Solution

The fourth proportional to 125,765.38, 173,573.85 and 78,034.11 is: 107,698.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,765.38 : 173,573.85 = 78,034.11 : x
  2. Step 2: Convert to fraction form
    125,765.38/173,573.85 = 78,034.11/x
  3. Step 3: Cross multiply
    125,765.38x = 173,573.85 × 78,034.11
  4. Step 4: Simplify right side
    125,765.38x = 13,544,680,904.02
  5. Step 5: Solve for x
    x = 13,544,680,904.02/125,765.38
  6. Step 6: Final answer
    x = 107,698.01

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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.