Home / 218,110.16-300,989.09-122,616.83

Finding the Fourth Proportional to 218,110.16, 300,989.09 and 122,616.83

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Solution

The fourth proportional to 218,110.16, 300,989.09 and 122,616.83 is: 169,209.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,110.16 : 300,989.09 = 122,616.83 : x
  2. Step 2: Convert to fraction form
    218,110.16/300,989.09 = 122,616.83/x
  3. Step 3: Cross multiply
    218,110.16x = 300,989.09 × 122,616.83
  4. Step 4: Simplify right side
    218,110.16x = 36,906,328,219.77
  5. Step 5: Solve for x
    x = 36,906,328,219.77/218,110.16
  6. Step 6: Final answer
    x = 169,209.58

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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.