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Finding the Fourth Proportional to 172,095.40, 258,143.10 and 134,770.60

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Solution

The fourth proportional to 172,095.40, 258,143.10 and 134,770.60 is: 202,155.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,095.40 : 258,143.10 = 134,770.60 : x
  2. Step 2: Convert to fraction form
    172,095.40/258,143.10 = 134,770.60/x
  3. Step 3: Cross multiply
    172,095.40x = 258,143.10 × 134,770.60
  4. Step 4: Simplify right side
    172,095.40x = 34,790,100,472.86
  5. Step 5: Solve for x
    x = 34,790,100,472.86/172,095.40
  6. Step 6: Final answer
    x = 202,155.90

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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.