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Finding the Fourth Proportional to 133,028.66, 183,582.45 and 72,599.54

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Solution

The fourth proportional to 133,028.66, 183,582.45 and 72,599.54 is: 100,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,028.66 : 183,582.45 = 72,599.54 : x
  2. Step 2: Convert to fraction form
    133,028.66/183,582.45 = 72,599.54/x
  3. Step 3: Cross multiply
    133,028.66x = 183,582.45 × 72,599.54
  4. Step 4: Simplify right side
    133,028.66x = 13,328,001,422.07
  5. Step 5: Solve for x
    x = 13,328,001,422.07/133,028.66
  6. Step 6: Final answer
    x = 100,188.95

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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.