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Finding the Fourth Proportional to 172,068.48, 258,002.20 and 66,764.44

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Solution

The fourth proportional to 172,068.48, 258,002.20 and 66,764.44 is: 100,107.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,068.48 : 258,002.20 = 66,764.44 : x
  2. Step 2: Convert to fraction form
    172,068.48/258,002.20 = 66,764.44/x
  3. Step 3: Cross multiply
    172,068.48x = 258,002.20 × 66,764.44
  4. Step 4: Simplify right side
    172,068.48x = 17,225,372,401.77
  5. Step 5: Solve for x
    x = 17,225,372,401.77/172,068.48
  6. Step 6: Final answer
    x = 100,107.66

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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.