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Finding the Fourth Proportional to 111,829.88, 154,266.41 and 66,475.61

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Solution

The fourth proportional to 111,829.88, 154,266.41 and 66,475.61 is: 91,701.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,829.88 : 154,266.41 = 66,475.61 : x
  2. Step 2: Convert to fraction form
    111,829.88/154,266.41 = 66,475.61/x
  3. Step 3: Cross multiply
    111,829.88x = 154,266.41 × 66,475.61
  4. Step 4: Simplify right side
    111,829.88x = 10,254,953,102.12
  5. Step 5: Solve for x
    x = 10,254,953,102.12/111,829.88
  6. Step 6: Final answer
    x = 91,701.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.