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Finding the Fourth Proportional to 136,750.20, 205,036.20 and 122,753.40

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Solution

The fourth proportional to 136,750.20, 205,036.20 and 122,753.40 is: 184,050.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,750.20 : 205,036.20 = 122,753.40 : x
  2. Step 2: Convert to fraction form
    136,750.20/205,036.20 = 122,753.40/x
  3. Step 3: Cross multiply
    136,750.20x = 205,036.20 × 122,753.40
  4. Step 4: Simplify right side
    136,750.20x = 25,168,890,673.08
  5. Step 5: Solve for x
    x = 25,168,890,673.08/136,750.20
  6. Step 6: Final answer
    x = 184,050.12

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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.