Home / 133,172.21-183,774.62-72,743.12

Finding the Fourth Proportional to 133,172.21, 183,774.62 and 72,743.12

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Solution

The fourth proportional to 133,172.21, 183,774.62 and 72,743.12 is: 100,383.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,172.21 : 183,774.62 = 72,743.12 : x
  2. Step 2: Convert to fraction form
    133,172.21/183,774.62 = 72,743.12/x
  3. Step 3: Cross multiply
    133,172.21x = 183,774.62 × 72,743.12
  4. Step 4: Simplify right side
    133,172.21x = 13,368,339,235.61
  5. Step 5: Solve for x
    x = 13,368,339,235.61/133,172.21
  6. Step 6: Final answer
    x = 100,383.85

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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.