Home / 133,261.28-183,900.12-72,831.90

Finding the Fourth Proportional to 133,261.28, 183,900.12 and 72,831.90

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Solution

The fourth proportional to 133,261.28, 183,900.12 and 72,831.90 is: 100,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,261.28 : 183,900.12 = 72,831.90 : x
  2. Step 2: Convert to fraction form
    133,261.28/183,900.12 = 72,831.90/x
  3. Step 3: Cross multiply
    133,261.28x = 183,900.12 × 72,831.90
  4. Step 4: Simplify right side
    133,261.28x = 13,393,795,976.01
  5. Step 5: Solve for x
    x = 13,393,795,976.01/133,261.28
  6. Step 6: Final answer
    x = 100,507.79

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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.