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Finding the Fourth Proportional to 90,593.40, 135,280.04 and 73,986.40

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Solution

The fourth proportional to 90,593.40, 135,280.04 and 73,986.40 is: 110,481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,593.40 : 135,280.04 = 73,986.40 : x
  2. Step 2: Convert to fraction form
    90,593.40/135,280.04 = 73,986.40/x
  3. Step 3: Cross multiply
    90,593.40x = 135,280.04 × 73,986.40
  4. Step 4: Simplify right side
    90,593.40x = 10,008,883,151.46
  5. Step 5: Solve for x
    x = 10,008,883,151.46/90,593.40
  6. Step 6: Final answer
    x = 110,481.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.