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Finding the Fourth Proportional to 133,391.96, 184,086.80 and 76,821.56

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Solution

The fourth proportional to 133,391.96, 184,086.80 and 76,821.56 is: 106,017.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,391.96 : 184,086.80 = 76,821.56 : x
  2. Step 2: Convert to fraction form
    133,391.96/184,086.80 = 76,821.56/x
  3. Step 3: Cross multiply
    133,391.96x = 184,086.80 × 76,821.56
  4. Step 4: Simplify right side
    133,391.96x = 14,141,835,151.41
  5. Step 5: Solve for x
    x = 14,141,835,151.41/133,391.96
  6. Step 6: Final answer
    x = 106,017.15

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1.5x scale

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.