Home / 187,611.86-258,901.79-102,728.91

Finding the Fourth Proportional to 187,611.86, 258,901.79 and 102,728.91

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Solution

The fourth proportional to 187,611.86, 258,901.79 and 102,728.91 is: 141,764.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,611.86 : 258,901.79 = 102,728.91 : x
  2. Step 2: Convert to fraction form
    187,611.86/258,901.79 = 102,728.91/x
  3. Step 3: Cross multiply
    187,611.86x = 258,901.79 × 102,728.91
  4. Step 4: Simplify right side
    187,611.86x = 26,596,698,170.10
  5. Step 5: Solve for x
    x = 26,596,698,170.10/187,611.86
  6. Step 6: Final answer
    x = 141,764.49

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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.