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Finding the Fourth Proportional to 100,574.75, 150,917.40 and 61,159.55

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Solution

The fourth proportional to 100,574.75, 150,917.40 and 61,159.55 is: 91,772.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,574.75 : 150,917.40 = 61,159.55 : x
  2. Step 2: Convert to fraction form
    100,574.75/150,917.40 = 61,159.55/x
  3. Step 3: Cross multiply
    100,574.75x = 150,917.40 × 61,159.55
  4. Step 4: Simplify right side
    100,574.75x = 9,230,039,516.58
  5. Step 5: Solve for x
    x = 9,230,039,516.58/100,574.75
  6. Step 6: Final answer
    x = 91,772.93

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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.