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Finding the Fourth Proportional to 140,150.20, 210,225.30 and 81,101.20

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Solution

The fourth proportional to 140,150.20, 210,225.30 and 81,101.20 is: 121,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,150.20 : 210,225.30 = 81,101.20 : x
  2. Step 2: Convert to fraction form
    140,150.20/210,225.30 = 81,101.20/x
  3. Step 3: Cross multiply
    140,150.20x = 210,225.30 × 81,101.20
  4. Step 4: Simplify right side
    140,150.20x = 17,049,524,100.36
  5. Step 5: Solve for x
    x = 17,049,524,100.36/140,150.20
  6. Step 6: Final answer
    x = 121,651.80

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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.