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Finding the Fourth Proportional to 122,215, 182,486.42 and 109,482.56

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Solution

The fourth proportional to 122,215, 182,486.42 and 109,482.56 is: 163,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,215 : 182,486.42 = 109,482.56 : x
  2. Step 2: Convert to fraction form
    122,215/182,486.42 = 109,482.56/x
  3. Step 3: Cross multiply
    122,215x = 182,486.42 × 109,482.56
  4. Step 4: Simplify right side
    122,215x = 19,979,080,426.84
  5. Step 5: Solve for x
    x = 19,979,080,426.84/122,215
  6. Step 6: Final answer
    x = 163,474.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.