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Finding the Fourth Proportional to 133,051.99, 183,605.25 and 72,621.13

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Solution

The fourth proportional to 133,051.99, 183,605.25 and 72,621.13 is: 100,213.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,051.99 : 183,605.25 = 72,621.13 : x
  2. Step 2: Convert to fraction form
    133,051.99/183,605.25 = 72,621.13/x
  3. Step 3: Cross multiply
    133,051.99x = 183,605.25 × 72,621.13
  4. Step 4: Simplify right side
    133,051.99x = 13,333,620,728.93
  5. Step 5: Solve for x
    x = 13,333,620,728.93/133,051.99
  6. Step 6: Final answer
    x = 100,213.61

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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.