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Finding the Fourth Proportional to 90,146.48, 135,108.95 and 50,620.50

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Solution

The fourth proportional to 90,146.48, 135,108.95 and 50,620.50 is: 75,868.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,146.48 : 135,108.95 = 50,620.50 : x
  2. Step 2: Convert to fraction form
    90,146.48/135,108.95 = 50,620.50/x
  3. Step 3: Cross multiply
    90,146.48x = 135,108.95 × 50,620.50
  4. Step 4: Simplify right side
    90,146.48x = 6,839,282,350.37
  5. Step 5: Solve for x
    x = 6,839,282,350.37/90,146.48
  6. Step 6: Final answer
    x = 75,868.55

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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.