Home / 134,809.20-202,213.80-90,457.20

Finding the Fourth Proportional to 134,809.20, 202,213.80 and 90,457.20

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Solution

The fourth proportional to 134,809.20, 202,213.80 and 90,457.20 is: 135,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,809.20 : 202,213.80 = 90,457.20 : x
  2. Step 2: Convert to fraction form
    134,809.20/202,213.80 = 90,457.20/x
  3. Step 3: Cross multiply
    134,809.20x = 202,213.80 × 90,457.20
  4. Step 4: Simplify right side
    134,809.20x = 18,291,694,149.36
  5. Step 5: Solve for x
    x = 18,291,694,149.36/134,809.20
  6. Step 6: Final answer
    x = 135,685.80

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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.