Home / 159,218.46-219,723.21-86,621.75

Finding the Fourth Proportional to 159,218.46, 219,723.21 and 86,621.75

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Solution

The fourth proportional to 159,218.46, 219,723.21 and 86,621.75 is: 119,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,218.46 : 219,723.21 = 86,621.75 : x
  2. Step 2: Convert to fraction form
    159,218.46/219,723.21 = 86,621.75/x
  3. Step 3: Cross multiply
    159,218.46x = 219,723.21 × 86,621.75
  4. Step 4: Simplify right side
    159,218.46x = 19,032,809,683.48
  5. Step 5: Solve for x
    x = 19,032,809,683.48/159,218.46
  6. Step 6: Final answer
    x = 119,538.96

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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.