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Finding the Fourth Proportional to 112,014.80, 168,022.20 and 109,422.80

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Solution

The fourth proportional to 112,014.80, 168,022.20 and 109,422.80 is: 164,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,014.80 : 168,022.20 = 109,422.80 : x
  2. Step 2: Convert to fraction form
    112,014.80/168,022.20 = 109,422.80/x
  3. Step 3: Cross multiply
    112,014.80x = 168,022.20 × 109,422.80
  4. Step 4: Simplify right side
    112,014.80x = 18,385,459,586.16
  5. Step 5: Solve for x
    x = 18,385,459,586.16/112,014.80
  6. Step 6: Final answer
    x = 164,134.20

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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.