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Finding the Fourth Proportional to 119,179.96, 178,769.92 and 30,430.32

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Solution

The fourth proportional to 119,179.96, 178,769.92 and 30,430.32 is: 45,645.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,179.96 : 178,769.92 = 30,430.32 : x
  2. Step 2: Convert to fraction form
    119,179.96/178,769.92 = 30,430.32/x
  3. Step 3: Cross multiply
    119,179.96x = 178,769.92 × 30,430.32
  4. Step 4: Simplify right side
    119,179.96x = 5,440,025,871.97
  5. Step 5: Solve for x
    x = 5,440,025,871.97/119,179.96
  6. Step 6: Final answer
    x = 45,645.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.