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Finding the Fourth Proportional to 158,504.40, 218,734.68 and 86,884.20

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Solution

The fourth proportional to 158,504.40, 218,734.68 and 86,884.20 is: 119,899.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,504.40 : 218,734.68 = 86,884.20 : x
  2. Step 2: Convert to fraction form
    158,504.40/218,734.68 = 86,884.20/x
  3. Step 3: Cross multiply
    158,504.40x = 218,734.68 × 86,884.20
  4. Step 4: Simplify right side
    158,504.40x = 19,004,587,684.06
  5. Step 5: Solve for x
    x = 19,004,587,684.06/158,504.40
  6. Step 6: Final answer
    x = 119,899.43

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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.