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Finding the Fourth Proportional to 117,123.99, 161,631.94 and 63,409.15

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Solution

The fourth proportional to 117,123.99, 161,631.94 and 63,409.15 is: 87,505.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,123.99 : 161,631.94 = 63,409.15 : x
  2. Step 2: Convert to fraction form
    117,123.99/161,631.94 = 63,409.15/x
  3. Step 3: Cross multiply
    117,123.99x = 161,631.94 × 63,409.15
  4. Step 4: Simplify right side
    117,123.99x = 10,248,943,365.65
  5. Step 5: Solve for x
    x = 10,248,943,365.65/117,123.99
  6. Step 6: Final answer
    x = 87,505.07

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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.