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Finding the Fourth Proportional to 125,247.84, 172,852.92 and 68,670

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Solution

The fourth proportional to 125,247.84, 172,852.92 and 68,670 is: 94,770.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,247.84 : 172,852.92 = 68,670 : x
  2. Step 2: Convert to fraction form
    125,247.84/172,852.92 = 68,670/x
  3. Step 3: Cross multiply
    125,247.84x = 172,852.92 × 68,670
  4. Step 4: Simplify right side
    125,247.84x = 11,869,810,016.40
  5. Step 5: Solve for x
    x = 11,869,810,016.40/125,247.84
  6. Step 6: Final answer
    x = 94,770.58

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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.