Home / 125,084.43-172,546.02-79,129.84

Finding the Fourth Proportional to 125,084.43, 172,546.02 and 79,129.84

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Solution

The fourth proportional to 125,084.43, 172,546.02 and 79,129.84 is: 109,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,084.43 : 172,546.02 = 79,129.84 : x
  2. Step 2: Convert to fraction form
    125,084.43/172,546.02 = 79,129.84/x
  3. Step 3: Cross multiply
    125,084.43x = 172,546.02 × 79,129.84
  4. Step 4: Simplify right side
    125,084.43x = 13,653,538,584.66
  5. Step 5: Solve for x
    x = 13,653,538,584.66/125,084.43
  6. Step 6: Final answer
    x = 109,154.58

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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.