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Finding the Fourth Proportional to 172,990.80, 259,595.55 and 101,913.30

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Solution

The fourth proportional to 172,990.80, 259,595.55 and 101,913.30 is: 152,934.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,990.80 : 259,595.55 = 101,913.30 : x
  2. Step 2: Convert to fraction form
    172,990.80/259,595.55 = 101,913.30/x
  3. Step 3: Cross multiply
    172,990.80x = 259,595.55 × 101,913.30
  4. Step 4: Simplify right side
    172,990.80x = 26,456,239,165.82
  5. Step 5: Solve for x
    x = 26,456,239,165.82/172,990.80
  6. Step 6: Final answer
    x = 152,934.37

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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.