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Finding the Fourth Proportional to 102,118.80, 140,921.48 and 55,550.48

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Solution

The fourth proportional to 102,118.80, 140,921.48 and 55,550.48 is: 76,658.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,118.80 : 140,921.48 = 55,550.48 : x
  2. Step 2: Convert to fraction form
    102,118.80/140,921.48 = 55,550.48/x
  3. Step 3: Cross multiply
    102,118.80x = 140,921.48 × 55,550.48
  4. Step 4: Simplify right side
    102,118.80x = 7,828,255,856.31
  5. Step 5: Solve for x
    x = 7,828,255,856.31/102,118.80
  6. Step 6: Final answer
    x = 76,658.32

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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.