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Finding the Fourth Proportional to 127,879.43, 176,477.88 and 69,739.35

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Solution

The fourth proportional to 127,879.43, 176,477.88 and 69,739.35 is: 96,242.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,879.43 : 176,477.88 = 69,739.35 : x
  2. Step 2: Convert to fraction form
    127,879.43/176,477.88 = 69,739.35/x
  3. Step 3: Cross multiply
    127,879.43x = 176,477.88 × 69,739.35
  4. Step 4: Simplify right side
    127,879.43x = 12,307,452,640.58
  5. Step 5: Solve for x
    x = 12,307,452,640.58/127,879.43
  6. Step 6: Final answer
    x = 96,242.63

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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.