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Finding the Fourth Proportional to 110,937.20, 166,405.80 and 91,254.20

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Solution

The fourth proportional to 110,937.20, 166,405.80 and 91,254.20 is: 136,881.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,937.20 : 166,405.80 = 91,254.20 : x
  2. Step 2: Convert to fraction form
    110,937.20/166,405.80 = 91,254.20/x
  3. Step 3: Cross multiply
    110,937.20x = 166,405.80 × 91,254.20
  4. Step 4: Simplify right side
    110,937.20x = 15,185,228,154.36
  5. Step 5: Solve for x
    x = 15,185,228,154.36/110,937.20
  6. Step 6: Final answer
    x = 136,881.30

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1.5x scale

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.