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Finding the Fourth Proportional to 172,806.75, 238,473.32 and 93,318.75

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Solution

The fourth proportional to 172,806.75, 238,473.32 and 93,318.75 is: 128,779.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,806.75 : 238,473.32 = 93,318.75 : x
  2. Step 2: Convert to fraction form
    172,806.75/238,473.32 = 93,318.75/x
  3. Step 3: Cross multiply
    172,806.75x = 238,473.32 × 93,318.75
  4. Step 4: Simplify right side
    172,806.75x = 22,254,031,664.16
  5. Step 5: Solve for x
    x = 22,254,031,664.16/172,806.75
  6. Step 6: Final answer
    x = 128,779.88

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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.