Home / 258,872.15-388,136.91-123,956.12

Finding the Fourth Proportional to 258,872.15, 388,136.91 and 123,956.12

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Solution

The fourth proportional to 258,872.15, 388,136.91 and 123,956.12 is: 185,852.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,872.15 : 388,136.91 = 123,956.12 : x
  2. Step 2: Convert to fraction form
    258,872.15/388,136.91 = 123,956.12/x
  3. Step 3: Cross multiply
    258,872.15x = 388,136.91 × 123,956.12
  4. Step 4: Simplify right side
    258,872.15x = 48,111,946,827.57
  5. Step 5: Solve for x
    x = 48,111,946,827.57/258,872.15
  6. Step 6: Final answer
    x = 185,852.15

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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.