Home / 161,877.78-222,882.99-137,631.06

Finding the Fourth Proportional to 161,877.78, 222,882.99 and 137,631.06

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Solution

The fourth proportional to 161,877.78, 222,882.99 and 137,631.06 is: 189,498.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,877.78 : 222,882.99 = 137,631.06 : x
  2. Step 2: Convert to fraction form
    161,877.78/222,882.99 = 137,631.06/x
  3. Step 3: Cross multiply
    161,877.78x = 222,882.99 × 137,631.06
  4. Step 4: Simplify right side
    161,877.78x = 30,675,622,169.67
  5. Step 5: Solve for x
    x = 30,675,622,169.67/161,877.78
  6. Step 6: Final answer
    x = 189,498.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.