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Finding the Fourth Proportional to 136,616.40, 205,313.40 and 119,509.20

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Solution

The fourth proportional to 136,616.40, 205,313.40 and 119,509.20 is: 179,603.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,616.40 : 205,313.40 = 119,509.20 : x
  2. Step 2: Convert to fraction form
    136,616.40/205,313.40 = 119,509.20/x
  3. Step 3: Cross multiply
    136,616.40x = 205,313.40 × 119,509.20
  4. Step 4: Simplify right side
    136,616.40x = 24,536,840,183.28
  5. Step 5: Solve for x
    x = 24,536,840,183.28/136,616.40
  6. Step 6: Final answer
    x = 179,603.91

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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.