Home / 133,151.23-183,747.76-72,721.90

Finding the Fourth Proportional to 133,151.23, 183,747.76 and 72,721.90

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Solution

The fourth proportional to 133,151.23, 183,747.76 and 72,721.90 is: 100,355.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,151.23 : 183,747.76 = 72,721.90 : x
  2. Step 2: Convert to fraction form
    133,151.23/183,747.76 = 72,721.90/x
  3. Step 3: Cross multiply
    133,151.23x = 183,747.76 × 72,721.90
  4. Step 4: Simplify right side
    133,151.23x = 13,362,486,227.94
  5. Step 5: Solve for x
    x = 13,362,486,227.94/133,151.23
  6. Step 6: Final answer
    x = 100,355.71

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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.