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Finding the Fourth Proportional to 136,923.60, 205,385.40 and 131,480.40

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Solution

The fourth proportional to 136,923.60, 205,385.40 and 131,480.40 is: 197,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,923.60 : 205,385.40 = 131,480.40 : x
  2. Step 2: Convert to fraction form
    136,923.60/205,385.40 = 131,480.40/x
  3. Step 3: Cross multiply
    136,923.60x = 205,385.40 × 131,480.40
  4. Step 4: Simplify right side
    136,923.60x = 27,004,154,546.16
  5. Step 5: Solve for x
    x = 27,004,154,546.16/136,923.60
  6. Step 6: Final answer
    x = 197,220.60

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1.5x scale

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.