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Finding the Fourth Proportional to 124,065, 171,136.74 and 73,761

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Solution

The fourth proportional to 124,065, 171,136.74 and 73,761 is: 101,746.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,065 : 171,136.74 = 73,761 : x
  2. Step 2: Convert to fraction form
    124,065/171,136.74 = 73,761/x
  3. Step 3: Cross multiply
    124,065x = 171,136.74 × 73,761
  4. Step 4: Simplify right side
    124,065x = 12,623,217,079.14
  5. Step 5: Solve for x
    x = 12,623,217,079.14/124,065
  6. Step 6: Final answer
    x = 101,746.80

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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.