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Finding the Fourth Proportional to 158,266.16, 218,410.04 and 86,645.04

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Solution

The fourth proportional to 158,266.16, 218,410.04 and 86,645.04 is: 119,571.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,266.16 : 218,410.04 = 86,645.04 : x
  2. Step 2: Convert to fraction form
    158,266.16/218,410.04 = 86,645.04/x
  3. Step 3: Cross multiply
    158,266.16x = 218,410.04 × 86,645.04
  4. Step 4: Simplify right side
    158,266.16x = 18,924,146,652.20
  5. Step 5: Solve for x
    x = 18,924,146,652.20/158,266.16
  6. Step 6: Final answer
    x = 119,571.65

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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.