Home / 158,455.20-218,669.90-86,833.69

Finding the Fourth Proportional to 158,455.20, 218,669.90 and 86,833.69

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Solution

The fourth proportional to 158,455.20, 218,669.90 and 86,833.69 is: 119,831.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,455.20 : 218,669.90 = 86,833.69 : x
  2. Step 2: Convert to fraction form
    158,455.20/218,669.90 = 86,833.69/x
  3. Step 3: Cross multiply
    158,455.20x = 218,669.90 × 86,833.69
  4. Step 4: Simplify right side
    158,455.20x = 18,987,914,060.75
  5. Step 5: Solve for x
    x = 18,987,914,060.75/158,455.20
  6. Step 6: Final answer
    x = 119,831.43

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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.