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Finding the Fourth Proportional to 172,597.50, 238,061.84 and 115,207.88

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Solution

The fourth proportional to 172,597.50, 238,061.84 and 115,207.88 is: 158,904.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,597.50 : 238,061.84 = 115,207.88 : x
  2. Step 2: Convert to fraction form
    172,597.50/238,061.84 = 115,207.88/x
  3. Step 3: Cross multiply
    172,597.50x = 238,061.84 × 115,207.88
  4. Step 4: Simplify right side
    172,597.50x = 27,426,598,128.95
  5. Step 5: Solve for x
    x = 27,426,598,128.95/172,597.50
  6. Step 6: Final answer
    x = 158,904.96

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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.