Home / 133,234.72-183,864.39-72,805.36

Finding the Fourth Proportional to 133,234.72, 183,864.39 and 72,805.36

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Solution

The fourth proportional to 133,234.72, 183,864.39 and 72,805.36 is: 100,471.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,234.72 : 183,864.39 = 72,805.36 : x
  2. Step 2: Convert to fraction form
    133,234.72/183,864.39 = 72,805.36/x
  3. Step 3: Cross multiply
    133,234.72x = 183,864.39 × 72,805.36
  4. Step 4: Simplify right side
    133,234.72x = 13,386,313,105.13
  5. Step 5: Solve for x
    x = 13,386,313,105.13/133,234.72
  6. Step 6: Final answer
    x = 100,471.66

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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.