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Finding the Fourth Proportional to 155,620.80, 232,912.80 and 136,958.40

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Solution

The fourth proportional to 155,620.80, 232,912.80 and 136,958.40 is: 204,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,620.80 : 232,912.80 = 136,958.40 : x
  2. Step 2: Convert to fraction form
    155,620.80/232,912.80 = 136,958.40/x
  3. Step 3: Cross multiply
    155,620.80x = 232,912.80 × 136,958.40
  4. Step 4: Simplify right side
    155,620.80x = 31,899,364,427.52
  5. Step 5: Solve for x
    x = 31,899,364,427.52/155,620.80
  6. Step 6: Final answer
    x = 204,981.37

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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.