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Finding the Fourth Proportional to 133,077.92, 183,639.70 and 76,489.30

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Solution

The fourth proportional to 133,077.92, 183,639.70 and 76,489.30 is: 105,550.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,077.92 : 183,639.70 = 76,489.30 : x
  2. Step 2: Convert to fraction form
    133,077.92/183,639.70 = 76,489.30/x
  3. Step 3: Cross multiply
    133,077.92x = 183,639.70 × 76,489.30
  4. Step 4: Simplify right side
    133,077.92x = 14,046,472,105.21
  5. Step 5: Solve for x
    x = 14,046,472,105.21/133,077.92
  6. Step 6: Final answer
    x = 105,550.73

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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.