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Finding the Fourth Proportional to 125,021.67, 172,523.28 and 68,422.11

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Solution

The fourth proportional to 125,021.67, 172,523.28 and 68,422.11 is: 94,418.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,021.67 : 172,523.28 = 68,422.11 : x
  2. Step 2: Convert to fraction form
    125,021.67/172,523.28 = 68,422.11/x
  3. Step 3: Cross multiply
    125,021.67x = 172,523.28 × 68,422.11
  4. Step 4: Simplify right side
    125,021.67x = 11,804,406,841.72
  5. Step 5: Solve for x
    x = 11,804,406,841.72/125,021.67
  6. Step 6: Final answer
    x = 94,418.89

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1.5x scale

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.