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Finding the Fourth Proportional to 158,589.52, 218,855.75 and 86,964.82

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Solution

The fourth proportional to 158,589.52, 218,855.75 and 86,964.82 is: 120,012.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,589.52 : 218,855.75 = 86,964.82 : x
  2. Step 2: Convert to fraction form
    158,589.52/218,855.75 = 86,964.82/x
  3. Step 3: Cross multiply
    158,589.52x = 218,855.75 × 86,964.82
  4. Step 4: Simplify right side
    158,589.52x = 19,032,749,922.75
  5. Step 5: Solve for x
    x = 19,032,749,922.75/158,589.52
  6. Step 6: Final answer
    x = 120,012.66

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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.