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Finding the Fourth Proportional to 200,129.09, 300,297.11 and 87,888.20

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Solution

The fourth proportional to 200,129.09, 300,297.11 and 87,888.20 is: 131,877.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,129.09 : 300,297.11 = 87,888.20 : x
  2. Step 2: Convert to fraction form
    200,129.09/300,297.11 = 87,888.20/x
  3. Step 3: Cross multiply
    200,129.09x = 300,297.11 × 87,888.20
  4. Step 4: Simplify right side
    200,129.09x = 26,392,572,463.10
  5. Step 5: Solve for x
    x = 26,392,572,463.10/200,129.09
  6. Step 6: Final answer
    x = 131,877.74

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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.