Home / 133,091.21-183,664.93-72,661.85

Finding the Fourth Proportional to 133,091.21, 183,664.93 and 72,661.85

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Solution

The fourth proportional to 133,091.21, 183,664.93 and 72,661.85 is: 100,272.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,091.21 : 183,664.93 = 72,661.85 : x
  2. Step 2: Convert to fraction form
    133,091.21/183,664.93 = 72,661.85/x
  3. Step 3: Cross multiply
    133,091.21x = 183,664.93 × 72,661.85
  4. Step 4: Simplify right side
    133,091.21x = 13,345,433,973.86
  5. Step 5: Solve for x
    x = 13,345,433,973.86/133,091.21
  6. Step 6: Final answer
    x = 100,272.84

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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.