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Finding the Fourth Proportional to 144,990.68, 217,645.10 and 115,196.42

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Solution

The fourth proportional to 144,990.68, 217,645.10 and 115,196.42 is: 172,921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,990.68 : 217,645.10 = 115,196.42 : x
  2. Step 2: Convert to fraction form
    144,990.68/217,645.10 = 115,196.42/x
  3. Step 3: Cross multiply
    144,990.68x = 217,645.10 × 115,196.42
  4. Step 4: Simplify right side
    144,990.68x = 25,071,935,118.32
  5. Step 5: Solve for x
    x = 25,071,935,118.32/144,990.68
  6. Step 6: Final answer
    x = 172,921.01

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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.