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Finding the Fourth Proportional to 172,719.74, 238,404.57 and 109,099.91

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Solution

The fourth proportional to 172,719.74, 238,404.57 and 109,099.91 is: 150,590.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,719.74 : 238,404.57 = 109,099.91 : x
  2. Step 2: Convert to fraction form
    172,719.74/238,404.57 = 109,099.91/x
  3. Step 3: Cross multiply
    172,719.74x = 238,404.57 × 109,099.91
  4. Step 4: Simplify right side
    172,719.74x = 26,009,917,317.48
  5. Step 5: Solve for x
    x = 26,009,917,317.48/172,719.74
  6. Step 6: Final answer
    x = 150,590.30

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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.