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Finding the Fourth Proportional to 155,436.99, 214,510.91 and 91,773.42

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Solution

The fourth proportional to 155,436.99, 214,510.91 and 91,773.42 is: 126,651.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,436.99 : 214,510.91 = 91,773.42 : x
  2. Step 2: Convert to fraction form
    155,436.99/214,510.91 = 91,773.42/x
  3. Step 3: Cross multiply
    155,436.99x = 214,510.91 × 91,773.42
  4. Step 4: Simplify right side
    155,436.99x = 19,686,399,838.01
  5. Step 5: Solve for x
    x = 19,686,399,838.01/155,436.99
  6. Step 6: Final answer
    x = 126,651.96

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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.