Home / 134,480.20-201,720.30-90,243.40

Finding the Fourth Proportional to 134,480.20, 201,720.30 and 90,243.40

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Solution

The fourth proportional to 134,480.20, 201,720.30 and 90,243.40 is: 135,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,480.20 : 201,720.30 = 90,243.40 : x
  2. Step 2: Convert to fraction form
    134,480.20/201,720.30 = 90,243.40/x
  3. Step 3: Cross multiply
    134,480.20x = 201,720.30 × 90,243.40
  4. Step 4: Simplify right side
    134,480.20x = 18,203,925,721.02
  5. Step 5: Solve for x
    x = 18,203,925,721.02/134,480.20
  6. Step 6: Final answer
    x = 135,365.10

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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.