Home / 84,089.43-126,130.50-20,908.23

Finding the Fourth Proportional to 84,089.43, 126,130.50 and 20,908.23

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Solution

The fourth proportional to 84,089.43, 126,130.50 and 20,908.23 is: 31,361.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,089.43 : 126,130.50 = 20,908.23 : x
  2. Step 2: Convert to fraction form
    84,089.43/126,130.50 = 20,908.23/x
  3. Step 3: Cross multiply
    84,089.43x = 126,130.50 × 20,908.23
  4. Step 4: Simplify right side
    84,089.43x = 2,637,165,504.02
  5. Step 5: Solve for x
    x = 2,637,165,504.02/84,089.43
  6. Step 6: Final answer
    x = 31,361.44

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Double scale
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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.