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Finding the Fourth Proportional to 115,157, 172,693.92 and 40,256.84

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Solution

The fourth proportional to 115,157, 172,693.92 and 40,256.84 is: 60,370.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,157 : 172,693.92 = 40,256.84 : x
  2. Step 2: Convert to fraction form
    115,157/172,693.92 = 40,256.84/x
  3. Step 3: Cross multiply
    115,157x = 172,693.92 × 40,256.84
  4. Step 4: Simplify right side
    115,157x = 6,952,111,506.41
  5. Step 5: Solve for x
    x = 6,952,111,506.41/115,157
  6. Step 6: Final answer
    x = 60,370.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.