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Finding the Fourth Proportional to 155,919.03, 215,168.20 and 84,299.03

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Solution

The fourth proportional to 155,919.03, 215,168.20 and 84,299.03 is: 116,332.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,919.03 : 215,168.20 = 84,299.03 : x
  2. Step 2: Convert to fraction form
    155,919.03/215,168.20 = 84,299.03/x
  3. Step 3: Cross multiply
    155,919.03x = 215,168.20 × 84,299.03
  4. Step 4: Simplify right side
    155,919.03x = 18,138,470,546.85
  5. Step 5: Solve for x
    x = 18,138,470,546.85/155,919.03
  6. Step 6: Final answer
    x = 116,332.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.