Home / 187,136.88-258,052.20-123,393.12

Finding the Fourth Proportional to 187,136.88, 258,052.20 and 123,393.12

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Solution

The fourth proportional to 187,136.88, 258,052.20 and 123,393.12 is: 170,152.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,136.88 : 258,052.20 = 123,393.12 : x
  2. Step 2: Convert to fraction form
    187,136.88/258,052.20 = 123,393.12/x
  3. Step 3: Cross multiply
    187,136.88x = 258,052.20 × 123,393.12
  4. Step 4: Simplify right side
    187,136.88x = 31,841,866,080.86
  5. Step 5: Solve for x
    x = 31,841,866,080.86/187,136.88
  6. Step 6: Final answer
    x = 170,152.81

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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.