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Finding the Fourth Proportional to 133,154.01, 183,751.56 and 72,724.65

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Solution

The fourth proportional to 133,154.01, 183,751.56 and 72,724.65 is: 100,359.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,154.01 : 183,751.56 = 72,724.65 : x
  2. Step 2: Convert to fraction form
    133,154.01/183,751.56 = 72,724.65/x
  3. Step 3: Cross multiply
    133,154.01x = 183,751.56 × 72,724.65
  4. Step 4: Simplify right side
    133,154.01x = 13,363,267,887.95
  5. Step 5: Solve for x
    x = 13,363,267,887.95/133,154.01
  6. Step 6: Final answer
    x = 100,359.49

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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.