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Finding the Fourth Proportional to 133,170.48, 183,780.72 and 76,581.86

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Solution

The fourth proportional to 133,170.48, 183,780.72 and 76,581.86 is: 105,686.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,170.48 : 183,780.72 = 76,581.86 : x
  2. Step 2: Convert to fraction form
    133,170.48/183,780.72 = 76,581.86/x
  3. Step 3: Cross multiply
    133,170.48x = 183,780.72 × 76,581.86
  4. Step 4: Simplify right side
    133,170.48x = 14,074,268,450.84
  5. Step 5: Solve for x
    x = 14,074,268,450.84/133,170.48
  6. Step 6: Final answer
    x = 105,686.10

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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.