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Finding the Fourth Proportional to 117,356.81, 161,950.87 and 63,641.55

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Solution

The fourth proportional to 117,356.81, 161,950.87 and 63,641.55 is: 87,824.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,356.81 : 161,950.87 = 63,641.55 : x
  2. Step 2: Convert to fraction form
    117,356.81/161,950.87 = 63,641.55/x
  3. Step 3: Cross multiply
    117,356.81x = 161,950.87 × 63,641.55
  4. Step 4: Simplify right side
    117,356.81x = 10,306,804,231.54
  5. Step 5: Solve for x
    x = 10,306,804,231.54/117,356.81
  6. Step 6: Final answer
    x = 87,824.51

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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.