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Finding the Fourth Proportional to 172,230.53, 258,394.80 and 67,079.57

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Solution

The fourth proportional to 172,230.53, 258,394.80 and 67,079.57 is: 100,638.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,230.53 : 258,394.80 = 67,079.57 : x
  2. Step 2: Convert to fraction form
    172,230.53/258,394.80 = 67,079.57/x
  3. Step 3: Cross multiply
    172,230.53x = 258,394.80 × 67,079.57
  4. Step 4: Simplify right side
    172,230.53x = 17,333,012,074.24
  5. Step 5: Solve for x
    x = 17,333,012,074.24/172,230.53
  6. Step 6: Final answer
    x = 100,638.44

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1.5x scale

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.