Home / 133,261.09-183,899.86-72,831.72

Finding the Fourth Proportional to 133,261.09, 183,899.86 and 72,831.72

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Solution

The fourth proportional to 133,261.09, 183,899.86 and 72,831.72 is: 100,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,261.09 : 183,899.86 = 72,831.72 : x
  2. Step 2: Convert to fraction form
    133,261.09/183,899.86 = 72,831.72/x
  3. Step 3: Cross multiply
    133,261.09x = 183,899.86 × 72,831.72
  4. Step 4: Simplify right side
    133,261.09x = 13,393,742,425.92
  5. Step 5: Solve for x
    x = 13,393,742,425.92/133,261.09
  6. Step 6: Final answer
    x = 100,507.53

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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.