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Finding the Fourth Proportional to 158,601.30, 218,872.80 and 86,977.02

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Solution

The fourth proportional to 158,601.30, 218,872.80 and 86,977.02 is: 120,029.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,601.30 : 218,872.80 = 86,977.02 : x
  2. Step 2: Convert to fraction form
    158,601.30/218,872.80 = 86,977.02/x
  3. Step 3: Cross multiply
    158,601.30x = 218,872.80 × 86,977.02
  4. Step 4: Simplify right side
    158,601.30x = 19,036,903,903.06
  5. Step 5: Solve for x
    x = 19,036,903,903.06/158,601.30
  6. Step 6: Final answer
    x = 120,029.94

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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.