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Finding the Fourth Proportional to 119,157.28, 178,735.77 and 30,410.79

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Solution

The fourth proportional to 119,157.28, 178,735.77 and 30,410.79 is: 45,616.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,157.28 : 178,735.77 = 30,410.79 : x
  2. Step 2: Convert to fraction form
    119,157.28/178,735.77 = 30,410.79/x
  3. Step 3: Cross multiply
    119,157.28x = 178,735.77 × 30,410.79
  4. Step 4: Simplify right side
    119,157.28x = 5,435,495,966.96
  5. Step 5: Solve for x
    x = 5,435,495,966.96/119,157.28
  6. Step 6: Final answer
    x = 45,616.15

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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.