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Finding the Fourth Proportional to 158,091.84, 218,246.40 and 122,200.80

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Solution

The fourth proportional to 158,091.84, 218,246.40 and 122,200.80 is: 168,698.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,091.84 : 218,246.40 = 122,200.80 : x
  2. Step 2: Convert to fraction form
    158,091.84/218,246.40 = 122,200.80/x
  3. Step 3: Cross multiply
    158,091.84x = 218,246.40 × 122,200.80
  4. Step 4: Simplify right side
    158,091.84x = 26,669,884,677.12
  5. Step 5: Solve for x
    x = 26,669,884,677.12/158,091.84
  6. Step 6: Final answer
    x = 168,698.68

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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.