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Finding the Fourth Proportional to 158,593.52, 218,859.36 and 86,974.08

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Solution

The fourth proportional to 158,593.52, 218,859.36 and 86,974.08 is: 120,024.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,593.52 : 218,859.36 = 86,974.08 : x
  2. Step 2: Convert to fraction form
    158,593.52/218,859.36 = 86,974.08/x
  3. Step 3: Cross multiply
    158,593.52x = 218,859.36 × 86,974.08
  4. Step 4: Simplify right side
    158,593.52x = 19,035,091,485.39
  5. Step 5: Solve for x
    x = 19,035,091,485.39/158,593.52
  6. Step 6: Final answer
    x = 120,024.40

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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.