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Finding the Fourth Proportional to 136,690.20, 205,035.30 and 124,224.30

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Solution

The fourth proportional to 136,690.20, 205,035.30 and 124,224.30 is: 186,336.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,690.20 : 205,035.30 = 124,224.30 : x
  2. Step 2: Convert to fraction form
    136,690.20/205,035.30 = 124,224.30/x
  3. Step 3: Cross multiply
    136,690.20x = 205,035.30 × 124,224.30
  4. Step 4: Simplify right side
    136,690.20x = 25,470,366,617.79
  5. Step 5: Solve for x
    x = 25,470,366,617.79/136,690.20
  6. Step 6: Final answer
    x = 186,336.45

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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.