Home / 131,857.73-181,963.23-71,428.22

Finding the Fourth Proportional to 131,857.73, 181,963.23 and 71,428.22

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Solution

The fourth proportional to 131,857.73, 181,963.23 and 71,428.22 is: 98,570.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,857.73 : 181,963.23 = 71,428.22 : x
  2. Step 2: Convert to fraction form
    131,857.73/181,963.23 = 71,428.22/x
  3. Step 3: Cross multiply
    131,857.73x = 181,963.23 × 71,428.22
  4. Step 4: Simplify right side
    131,857.73x = 12,997,309,624.35
  5. Step 5: Solve for x
    x = 12,997,309,624.35/131,857.73
  6. Step 6: Final answer
    x = 98,570.71

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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.