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Finding the Fourth Proportional to 172,975, 238,581.64 and 112,432.72

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Solution

The fourth proportional to 172,975, 238,581.64 and 112,432.72 is: 155,076.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,975 : 238,581.64 = 112,432.72 : x
  2. Step 2: Convert to fraction form
    172,975/238,581.64 = 112,432.72/x
  3. Step 3: Cross multiply
    172,975x = 238,581.64 × 112,432.72
  4. Step 4: Simplify right side
    172,975x = 26,824,382,727.26
  5. Step 5: Solve for x
    x = 26,824,382,727.26/172,975
  6. Step 6: Final answer
    x = 155,076.65

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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.