Home / 145,343.20-217,496.40-100,760.80

Finding the Fourth Proportional to 145,343.20, 217,496.40 and 100,760.80

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Solution

The fourth proportional to 145,343.20, 217,496.40 and 100,760.80 is: 150,781.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,343.20 : 217,496.40 = 100,760.80 : x
  2. Step 2: Convert to fraction form
    145,343.20/217,496.40 = 100,760.80/x
  3. Step 3: Cross multiply
    145,343.20x = 217,496.40 × 100,760.80
  4. Step 4: Simplify right side
    145,343.20x = 21,915,111,261.12
  5. Step 5: Solve for x
    x = 21,915,111,261.12/145,343.20
  6. Step 6: Final answer
    x = 150,781.81

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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.