Home / 159,451.74-220,043.40-87,831.75

Finding the Fourth Proportional to 159,451.74, 220,043.40 and 87,831.75

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Solution

The fourth proportional to 159,451.74, 220,043.40 and 87,831.75 is: 121,207.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,451.74 : 220,043.40 = 87,831.75 : x
  2. Step 2: Convert to fraction form
    159,451.74/220,043.40 = 87,831.75/x
  3. Step 3: Cross multiply
    159,451.74x = 220,043.40 × 87,831.75
  4. Step 4: Simplify right side
    159,451.74x = 19,326,796,897.95
  5. Step 5: Solve for x
    x = 19,326,796,897.95/159,451.74
  6. Step 6: Final answer
    x = 121,207.81

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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.