Home / 152,831.80-210,903.78-91,612.57

Finding the Fourth Proportional to 152,831.80, 210,903.78 and 91,612.57

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Solution

The fourth proportional to 152,831.80, 210,903.78 and 91,612.57 is: 126,422.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,831.80 : 210,903.78 = 91,612.57 : x
  2. Step 2: Convert to fraction form
    152,831.80/210,903.78 = 91,612.57/x
  3. Step 3: Cross multiply
    152,831.80x = 210,903.78 × 91,612.57
  4. Step 4: Simplify right side
    152,831.80x = 19,321,436,850.45
  5. Step 5: Solve for x
    x = 19,321,436,850.45/152,831.80
  6. Step 6: Final answer
    x = 126,422.88

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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.