Home / 131,963.81-181,992.47-102,899.38

Finding the Fourth Proportional to 131,963.81, 181,992.47 and 102,899.38

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Solution

The fourth proportional to 131,963.81, 181,992.47 and 102,899.38 is: 141,909.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,963.81 : 181,992.47 = 102,899.38 : x
  2. Step 2: Convert to fraction form
    131,963.81/181,992.47 = 102,899.38/x
  3. Step 3: Cross multiply
    131,963.81x = 181,992.47 × 102,899.38
  4. Step 4: Simplify right side
    131,963.81x = 18,726,910,903.21
  5. Step 5: Solve for x
    x = 18,726,910,903.21/131,963.81
  6. Step 6: Final answer
    x = 141,909.44

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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.