Home / 134,540.20-201,810.30-87,231.40

Finding the Fourth Proportional to 134,540.20, 201,810.30 and 87,231.40

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Solution

The fourth proportional to 134,540.20, 201,810.30 and 87,231.40 is: 130,847.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,540.20 : 201,810.30 = 87,231.40 : x
  2. Step 2: Convert to fraction form
    134,540.20/201,810.30 = 87,231.40/x
  3. Step 3: Cross multiply
    134,540.20x = 201,810.30 × 87,231.40
  4. Step 4: Simplify right side
    134,540.20x = 17,604,195,003.42
  5. Step 5: Solve for x
    x = 17,604,195,003.42/134,540.20
  6. Step 6: Final answer
    x = 130,847.10

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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.