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Finding the Fourth Proportional to 140,018.36, 193,218.36 and 79,581.02

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Solution

The fourth proportional to 140,018.36, 193,218.36 and 79,581.02 is: 109,817.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,018.36 : 193,218.36 = 79,581.02 : x
  2. Step 2: Convert to fraction form
    140,018.36/193,218.36 = 79,581.02/x
  3. Step 3: Cross multiply
    140,018.36x = 193,218.36 × 79,581.02
  4. Step 4: Simplify right side
    140,018.36x = 15,376,514,171.53
  5. Step 5: Solve for x
    x = 15,376,514,171.53/140,018.36
  6. Step 6: Final answer
    x = 109,817.84

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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.