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Finding the Fourth Proportional to 100,791.56, 150,439.81 and 88,981.64

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Solution

The fourth proportional to 100,791.56, 150,439.81 and 88,981.64 is: 132,812.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,791.56 : 150,439.81 = 88,981.64 : x
  2. Step 2: Convert to fraction form
    100,791.56/150,439.81 = 88,981.64/x
  3. Step 3: Cross multiply
    100,791.56x = 150,439.81 × 88,981.64
  4. Step 4: Simplify right side
    100,791.56x = 13,386,381,015.09
  5. Step 5: Solve for x
    x = 13,386,381,015.09/100,791.56
  6. Step 6: Final answer
    x = 132,812.52

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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.