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Finding the Fourth Proportional to 133,111.93, 183,693.54 and 72,682.54

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Solution

The fourth proportional to 133,111.93, 183,693.54 and 72,682.54 is: 100,301.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,111.93 : 183,693.54 = 72,682.54 : x
  2. Step 2: Convert to fraction form
    133,111.93/183,693.54 = 72,682.54/x
  3. Step 3: Cross multiply
    133,111.93x = 183,693.54 × 72,682.54
  4. Step 4: Simplify right side
    133,111.93x = 13,351,313,068.79
  5. Step 5: Solve for x
    x = 13,351,313,068.79/133,111.93
  6. Step 6: Final answer
    x = 100,301.40

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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.