Home / 158,261.28-218,405.49-86,647.98

Finding the Fourth Proportional to 158,261.28, 218,405.49 and 86,647.98

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Solution

The fourth proportional to 158,261.28, 218,405.49 and 86,647.98 is: 119,576.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,261.28 : 218,405.49 = 86,647.98 : x
  2. Step 2: Convert to fraction form
    158,261.28/218,405.49 = 86,647.98/x
  3. Step 3: Cross multiply
    158,261.28x = 218,405.49 × 86,647.98
  4. Step 4: Simplify right side
    158,261.28x = 18,924,394,529.41
  5. Step 5: Solve for x
    x = 18,924,394,529.41/158,261.28
  6. Step 6: Final answer
    x = 119,576.91

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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.