Home / 157,831.20-236,487.60-131,392.80

Finding the Fourth Proportional to 157,831.20, 236,487.60 and 131,392.80

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Solution

The fourth proportional to 157,831.20, 236,487.60 and 131,392.80 is: 196,873.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,831.20 : 236,487.60 = 131,392.80 : x
  2. Step 2: Convert to fraction form
    157,831.20/236,487.60 = 131,392.80/x
  3. Step 3: Cross multiply
    157,831.20x = 236,487.60 × 131,392.80
  4. Step 4: Simplify right side
    157,831.20x = 31,072,767,929.28
  5. Step 5: Solve for x
    x = 31,072,767,929.28/157,831.20
  6. Step 6: Final answer
    x = 196,873.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.