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Finding the Fourth Proportional to 140,058, 193,246.80 and 79,623.90

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Solution

The fourth proportional to 140,058, 193,246.80 and 79,623.90 is: 109,862.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,058 : 193,246.80 = 79,623.90 : x
  2. Step 2: Convert to fraction form
    140,058/193,246.80 = 79,623.90/x
  3. Step 3: Cross multiply
    140,058x = 193,246.80 × 79,623.90
  4. Step 4: Simplify right side
    140,058x = 15,387,063,878.52
  5. Step 5: Solve for x
    x = 15,387,063,878.52/140,058
  6. Step 6: Final answer
    x = 109,862.08

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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.