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Finding the Fourth Proportional to 133,151.76, 183,748.43 and 72,722.43

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Solution

The fourth proportional to 133,151.76, 183,748.43 and 72,722.43 is: 100,356.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,151.76 : 183,748.43 = 72,722.43 : x
  2. Step 2: Convert to fraction form
    133,151.76/183,748.43 = 72,722.43/x
  3. Step 3: Cross multiply
    133,151.76x = 183,748.43 × 72,722.43
  4. Step 4: Simplify right side
    133,151.76x = 13,362,631,974.67
  5. Step 5: Solve for x
    x = 13,362,631,974.67/133,151.76
  6. Step 6: Final answer
    x = 100,356.41

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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.