Home / 142,689.80-214,036.78-67,817.58

Finding the Fourth Proportional to 142,689.80, 214,036.78 and 67,817.58

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Solution

The fourth proportional to 142,689.80, 214,036.78 and 67,817.58 is: 101,727.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,689.80 : 214,036.78 = 67,817.58 : x
  2. Step 2: Convert to fraction form
    142,689.80/214,036.78 = 67,817.58/x
  3. Step 3: Cross multiply
    142,689.80x = 214,036.78 × 67,817.58
  4. Step 4: Simplify right side
    142,689.80x = 14,515,456,450.59
  5. Step 5: Solve for x
    x = 14,515,456,450.59/142,689.80
  6. Step 6: Final answer
    x = 101,727.36

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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.