Home / 157,831.25-217,805.84-86,211.29

Finding the Fourth Proportional to 157,831.25, 217,805.84 and 86,211.29

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Solution

The fourth proportional to 157,831.25, 217,805.84 and 86,211.29 is: 118,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,831.25 : 217,805.84 = 86,211.29 : x
  2. Step 2: Convert to fraction form
    157,831.25/217,805.84 = 86,211.29/x
  3. Step 3: Cross multiply
    157,831.25x = 217,805.84 × 86,211.29
  4. Step 4: Simplify right side
    157,831.25x = 18,777,322,004.88
  5. Step 5: Solve for x
    x = 18,777,322,004.88/157,831.25
  6. Step 6: Final answer
    x = 118,970.88

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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.