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Finding the Fourth Proportional to 110,941.20, 166,411.80 and 91,258.20

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Solution

The fourth proportional to 110,941.20, 166,411.80 and 91,258.20 is: 136,887.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,941.20 : 166,411.80 = 91,258.20 : x
  2. Step 2: Convert to fraction form
    110,941.20/166,411.80 = 91,258.20/x
  3. Step 3: Cross multiply
    110,941.20x = 166,411.80 × 91,258.20
  4. Step 4: Simplify right side
    110,941.20x = 15,186,441,326.76
  5. Step 5: Solve for x
    x = 15,186,441,326.76/110,941.20
  6. Step 6: Final answer
    x = 136,887.30

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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.