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Finding the Fourth Proportional to 172,948.80, 259,532.55 and 101,871.30

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Solution

The fourth proportional to 172,948.80, 259,532.55 and 101,871.30 is: 152,871.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,948.80 : 259,532.55 = 101,871.30 : x
  2. Step 2: Convert to fraction form
    172,948.80/259,532.55 = 101,871.30/x
  3. Step 3: Cross multiply
    172,948.80x = 259,532.55 × 101,871.30
  4. Step 4: Simplify right side
    172,948.80x = 26,438,918,260.82
  5. Step 5: Solve for x
    x = 26,438,918,260.82/172,948.80
  6. Step 6: Final answer
    x = 152,871.36

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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.