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Finding the Fourth Proportional to 81,270.93, 122,147.01 and 79,062.06

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Solution

The fourth proportional to 81,270.93, 122,147.01 and 79,062.06 is: 118,827.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,270.93 : 122,147.01 = 79,062.06 : x
  2. Step 2: Convert to fraction form
    81,270.93/122,147.01 = 79,062.06/x
  3. Step 3: Cross multiply
    81,270.93x = 122,147.01 × 79,062.06
  4. Step 4: Simplify right side
    81,270.93x = 9,657,194,233.44
  5. Step 5: Solve for x
    x = 9,657,194,233.44/81,270.93
  6. Step 6: Final answer
    x = 118,827.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.