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Finding the Fourth Proportional to 158,425.46, 218,627.01 and 86,809.94

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Solution

The fourth proportional to 158,425.46, 218,627.01 and 86,809.94 is: 119,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,425.46 : 218,627.01 = 86,809.94 : x
  2. Step 2: Convert to fraction form
    158,425.46/218,627.01 = 86,809.94/x
  3. Step 3: Cross multiply
    158,425.46x = 218,627.01 × 86,809.94
  4. Step 4: Simplify right side
    158,425.46x = 18,978,997,620.48
  5. Step 5: Solve for x
    x = 18,978,997,620.48/158,425.46
  6. Step 6: Final answer
    x = 119,797.65

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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.