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Finding the Fourth Proportional to 125,359.03, 172,992.49 and 68,769.91

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Solution

The fourth proportional to 125,359.03, 172,992.49 and 68,769.91 is: 94,900.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,359.03 : 172,992.49 = 68,769.91 : x
  2. Step 2: Convert to fraction form
    125,359.03/172,992.49 = 68,769.91/x
  3. Step 3: Cross multiply
    125,359.03x = 172,992.49 × 68,769.91
  4. Step 4: Simplify right side
    125,359.03x = 11,896,677,967.98
  5. Step 5: Solve for x
    x = 11,896,677,967.98/125,359.03
  6. Step 6: Final answer
    x = 94,900.85

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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.