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Finding the Fourth Proportional to 158,212.68, 218,290.24 and 90,204.84

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Solution

The fourth proportional to 158,212.68, 218,290.24 and 90,204.84 is: 124,458.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,212.68 : 218,290.24 = 90,204.84 : x
  2. Step 2: Convert to fraction form
    158,212.68/218,290.24 = 90,204.84/x
  3. Step 3: Cross multiply
    158,212.68x = 218,290.24 × 90,204.84
  4. Step 4: Simplify right side
    158,212.68x = 19,690,836,172.76
  5. Step 5: Solve for x
    x = 19,690,836,172.76/158,212.68
  6. Step 6: Final answer
    x = 124,458.02

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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.