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Finding the Fourth Proportional to 172,948.30, 259,531.80 and 101,870.80

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Solution

The fourth proportional to 172,948.30, 259,531.80 and 101,870.80 is: 152,870.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,948.30 : 259,531.80 = 101,870.80 : x
  2. Step 2: Convert to fraction form
    172,948.30/259,531.80 = 101,870.80/x
  3. Step 3: Cross multiply
    172,948.30x = 259,531.80 × 101,870.80
  4. Step 4: Simplify right side
    172,948.30x = 26,438,712,091.44
  5. Step 5: Solve for x
    x = 26,438,712,091.44/172,948.30
  6. Step 6: Final answer
    x = 152,870.61

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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.