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Finding the Fourth Proportional to 100,716.04, 150,750.66 and 66,904.08

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Solution

The fourth proportional to 100,716.04, 150,750.66 and 66,904.08 is: 100,141.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,716.04 : 150,750.66 = 66,904.08 : x
  2. Step 2: Convert to fraction form
    100,716.04/150,750.66 = 66,904.08/x
  3. Step 3: Cross multiply
    100,716.04x = 150,750.66 × 66,904.08
  4. Step 4: Simplify right side
    100,716.04x = 10,085,834,216.69
  5. Step 5: Solve for x
    x = 10,085,834,216.69/100,716.04
  6. Step 6: Final answer
    x = 100,141.29

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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.