Home / 133,207.78-183,839.22-72,787.38

Finding the Fourth Proportional to 133,207.78, 183,839.22 and 72,787.38

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Solution

The fourth proportional to 133,207.78, 183,839.22 and 72,787.38 is: 100,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,207.78 : 183,839.22 = 72,787.38 : x
  2. Step 2: Convert to fraction form
    133,207.78/183,839.22 = 72,787.38/x
  3. Step 3: Cross multiply
    133,207.78x = 183,839.22 × 72,787.38
  4. Step 4: Simplify right side
    133,207.78x = 13,381,174,281.75
  5. Step 5: Solve for x
    x = 13,381,174,281.75/133,207.78
  6. Step 6: Final answer
    x = 100,453.40

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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.