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Finding the Fourth Proportional to 172,079.40, 258,119.10 and 134,754.60

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Solution

The fourth proportional to 172,079.40, 258,119.10 and 134,754.60 is: 202,131.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,079.40 : 258,119.10 = 134,754.60 : x
  2. Step 2: Convert to fraction form
    172,079.40/258,119.10 = 134,754.60/x
  3. Step 3: Cross multiply
    172,079.40x = 258,119.10 × 134,754.60
  4. Step 4: Simplify right side
    172,079.40x = 34,782,736,072.86
  5. Step 5: Solve for x
    x = 34,782,736,072.86/172,079.40
  6. Step 6: Final answer
    x = 202,131.90

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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.