Home / 187,523.40-258,781.86-102,639.72

Finding the Fourth Proportional to 187,523.40, 258,781.86 and 102,639.72

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Solution

The fourth proportional to 187,523.40, 258,781.86 and 102,639.72 is: 141,642.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,523.40 : 258,781.86 = 102,639.72 : x
  2. Step 2: Convert to fraction form
    187,523.40/258,781.86 = 102,639.72/x
  3. Step 3: Cross multiply
    187,523.40x = 258,781.86 × 102,639.72
  4. Step 4: Simplify right side
    187,523.40x = 26,561,297,651.48
  5. Step 5: Solve for x
    x = 26,561,297,651.48/187,523.40
  6. Step 6: Final answer
    x = 141,642.58

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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.