Home / 89,837.13-133,963.23-85,422.42

Finding the Fourth Proportional to 89,837.13, 133,963.23 and 85,422.42

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Solution

The fourth proportional to 89,837.13, 133,963.23 and 85,422.42 is: 127,380.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,837.13 : 133,963.23 = 85,422.42 : x
  2. Step 2: Convert to fraction form
    89,837.13/133,963.23 = 85,422.42/x
  3. Step 3: Cross multiply
    89,837.13x = 133,963.23 × 85,422.42
  4. Step 4: Simplify right side
    89,837.13x = 11,443,463,297.62
  5. Step 5: Solve for x
    x = 11,443,463,297.62/89,837.13
  6. Step 6: Final answer
    x = 127,380.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.