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Finding the Fourth Proportional to 127,879.09, 176,469.10 and 70,520.83

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Solution

The fourth proportional to 127,879.09, 176,469.10 and 70,520.83 is: 97,316.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,879.09 : 176,469.10 = 70,520.83 : x
  2. Step 2: Convert to fraction form
    127,879.09/176,469.10 = 70,520.83/x
  3. Step 3: Cross multiply
    127,879.09x = 176,469.10 × 70,520.83
  4. Step 4: Simplify right side
    127,879.09x = 12,444,747,401.35
  5. Step 5: Solve for x
    x = 12,444,747,401.35/127,879.09
  6. Step 6: Final answer
    x = 97,316.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.