Home / 159,582.90-220,221.40-86,986.48

Finding the Fourth Proportional to 159,582.90, 220,221.40 and 86,986.48

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Solution

The fourth proportional to 159,582.90, 220,221.40 and 86,986.48 is: 120,039.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,582.90 : 220,221.40 = 86,986.48 : x
  2. Step 2: Convert to fraction form
    159,582.90/220,221.40 = 86,986.48/x
  3. Step 3: Cross multiply
    159,582.90x = 220,221.40 × 86,986.48
  4. Step 4: Simplify right side
    159,582.90x = 19,156,284,406.67
  5. Step 5: Solve for x
    x = 19,156,284,406.67/159,582.90
  6. Step 6: Final answer
    x = 120,039.71

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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.