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Finding the Fourth Proportional to 125,768.53, 173,555.55 and 68,407.90

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Solution

The fourth proportional to 125,768.53, 173,555.55 and 68,407.90 is: 94,400.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,768.53 : 173,555.55 = 68,407.90 : x
  2. Step 2: Convert to fraction form
    125,768.53/173,555.55 = 68,407.90/x
  3. Step 3: Cross multiply
    125,768.53x = 173,555.55 × 68,407.90
  4. Step 4: Simplify right side
    125,768.53x = 11,872,570,708.85
  5. Step 5: Solve for x
    x = 11,872,570,708.85/125,768.53
  6. Step 6: Final answer
    x = 94,400.17

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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.