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Finding the Fourth Proportional to 342,155.94, 513,262.62 and 126,073.50

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Solution

The fourth proportional to 342,155.94, 513,262.62 and 126,073.50 is: 189,120.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,155.94 : 513,262.62 = 126,073.50 : x
  2. Step 2: Convert to fraction form
    342,155.94/513,262.62 = 126,073.50/x
  3. Step 3: Cross multiply
    342,155.94x = 513,262.62 × 126,073.50
  4. Step 4: Simplify right side
    342,155.94x = 64,708,814,922.57
  5. Step 5: Solve for x
    x = 64,708,814,922.57/342,155.94
  6. Step 6: Final answer
    x = 189,120.83

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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.