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Finding the Fourth Proportional to 172,947.80, 259,531.05 and 101,870.30

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Solution

The fourth proportional to 172,947.80, 259,531.05 and 101,870.30 is: 152,869.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,947.80 : 259,531.05 = 101,870.30 : x
  2. Step 2: Convert to fraction form
    172,947.80/259,531.05 = 101,870.30/x
  3. Step 3: Cross multiply
    172,947.80x = 259,531.05 × 101,870.30
  4. Step 4: Simplify right side
    172,947.80x = 26,438,505,922.82
  5. Step 5: Solve for x
    x = 26,438,505,922.82/172,947.80
  6. Step 6: Final answer
    x = 152,869.86

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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.