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Finding the Fourth Proportional to 172,525.88, 238,179.11 and 121,001.20

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Solution

The fourth proportional to 172,525.88, 238,179.11 and 121,001.20 is: 167,047.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,525.88 : 238,179.11 = 121,001.20 : x
  2. Step 2: Convert to fraction form
    172,525.88/238,179.11 = 121,001.20/x
  3. Step 3: Cross multiply
    172,525.88x = 238,179.11 × 121,001.20
  4. Step 4: Simplify right side
    172,525.88x = 28,819,956,924.48
  5. Step 5: Solve for x
    x = 28,819,956,924.48/172,525.88
  6. Step 6: Final answer
    x = 167,047.15

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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.