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Finding the Fourth Proportional to 133,147.62, 183,742.77 and 72,718.26

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Solution

The fourth proportional to 133,147.62, 183,742.77 and 72,718.26 is: 100,350.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,147.62 : 183,742.77 = 72,718.26 : x
  2. Step 2: Convert to fraction form
    133,147.62/183,742.77 = 72,718.26/x
  3. Step 3: Cross multiply
    133,147.62x = 183,742.77 × 72,718.26
  4. Step 4: Simplify right side
    133,147.62x = 13,361,454,521.98
  5. Step 5: Solve for x
    x = 13,361,454,521.98/133,147.62
  6. Step 6: Final answer
    x = 100,350.68

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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.