Home / 230,727.20-346,090.80-81,136.40

Finding the Fourth Proportional to 230,727.20, 346,090.80 and 81,136.40

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Solution

The fourth proportional to 230,727.20, 346,090.80 and 81,136.40 is: 121,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,727.20 : 346,090.80 = 81,136.40 : x
  2. Step 2: Convert to fraction form
    230,727.20/346,090.80 = 81,136.40/x
  3. Step 3: Cross multiply
    230,727.20x = 346,090.80 × 81,136.40
  4. Step 4: Simplify right side
    230,727.20x = 28,080,561,585.12
  5. Step 5: Solve for x
    x = 28,080,561,585.12/230,727.20
  6. Step 6: Final answer
    x = 121,704.60

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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.