Home / 133,229.28-183,861.76-76,640.64

Finding the Fourth Proportional to 133,229.28, 183,861.76 and 76,640.64

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Solution

The fourth proportional to 133,229.28, 183,861.76 and 76,640.64 is: 105,767.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,229.28 : 183,861.76 = 76,640.64 : x
  2. Step 2: Convert to fraction form
    133,229.28/183,861.76 = 76,640.64/x
  3. Step 3: Cross multiply
    133,229.28x = 183,861.76 × 76,640.64
  4. Step 4: Simplify right side
    133,229.28x = 14,091,282,957.93
  5. Step 5: Solve for x
    x = 14,091,282,957.93/133,229.28
  6. Step 6: Final answer
    x = 105,767.16

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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.