Home / 124,914.31-187,288.24-68,780.86

Finding the Fourth Proportional to 124,914.31, 187,288.24 and 68,780.86

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Solution

The fourth proportional to 124,914.31, 187,288.24 and 68,780.86 is: 103,125.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,914.31 : 187,288.24 = 68,780.86 : x
  2. Step 2: Convert to fraction form
    124,914.31/187,288.24 = 68,780.86/x
  3. Step 3: Cross multiply
    124,914.31x = 187,288.24 × 68,780.86
  4. Step 4: Simplify right side
    124,914.31x = 12,881,846,215.09
  5. Step 5: Solve for x
    x = 12,881,846,215.09/124,914.31
  6. Step 6: Final answer
    x = 103,125.46

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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.