Home / 215,727.40-323,783.10-126,869.80

Finding the Fourth Proportional to 215,727.40, 323,783.10 and 126,869.80

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Solution

The fourth proportional to 215,727.40, 323,783.10 and 126,869.80 is: 190,417.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,727.40 : 323,783.10 = 126,869.80 : x
  2. Step 2: Convert to fraction form
    215,727.40/323,783.10 = 126,869.80/x
  3. Step 3: Cross multiply
    215,727.40x = 323,783.10 × 126,869.80
  4. Step 4: Simplify right side
    215,727.40x = 41,078,297,140.38
  5. Step 5: Solve for x
    x = 41,078,297,140.38/215,727.40
  6. Step 6: Final answer
    x = 190,417.62

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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.