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Finding the Fourth Proportional to 136,279.30, 204,030.15 and 120,727.30

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Solution

The fourth proportional to 136,279.30, 204,030.15 and 120,727.30 is: 180,746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,279.30 : 204,030.15 = 120,727.30 : x
  2. Step 2: Convert to fraction form
    136,279.30/204,030.15 = 120,727.30/x
  3. Step 3: Cross multiply
    136,279.30x = 204,030.15 × 120,727.30
  4. Step 4: Simplify right side
    136,279.30x = 24,632,009,128.10
  5. Step 5: Solve for x
    x = 24,632,009,128.10/136,279.30
  6. Step 6: Final answer
    x = 180,746.52

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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.