Home / 151,456.44-209,010.06-87,831.21

Finding the Fourth Proportional to 151,456.44, 209,010.06 and 87,831.21

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Solution

The fourth proportional to 151,456.44, 209,010.06 and 87,831.21 is: 121,207.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,456.44 : 209,010.06 = 87,831.21 : x
  2. Step 2: Convert to fraction form
    151,456.44/209,010.06 = 87,831.21/x
  3. Step 3: Cross multiply
    151,456.44x = 209,010.06 × 87,831.21
  4. Step 4: Simplify right side
    151,456.44x = 18,357,606,471.97
  5. Step 5: Solve for x
    x = 18,357,606,471.97/151,456.44
  6. Step 6: Final answer
    x = 121,207.17

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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.