Home / 140,727.16-194,119.50-121,831.48

Finding the Fourth Proportional to 140,727.16, 194,119.50 and 121,831.48

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Solution

The fourth proportional to 140,727.16, 194,119.50 and 121,831.48 is: 168,054.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,727.16 : 194,119.50 = 121,831.48 : x
  2. Step 2: Convert to fraction form
    140,727.16/194,119.50 = 121,831.48/x
  3. Step 3: Cross multiply
    140,727.16x = 194,119.50 × 121,831.48
  4. Step 4: Simplify right side
    140,727.16x = 23,649,865,981.86
  5. Step 5: Solve for x
    x = 23,649,865,981.86/140,727.16
  6. Step 6: Final answer
    x = 168,054.74

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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.