Home / 103,638.20-143,046.06-67,914.68

Finding the Fourth Proportional to 103,638.20, 143,046.06 and 67,914.68

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Solution

The fourth proportional to 103,638.20, 143,046.06 and 67,914.68 is: 93,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.20 : 143,046.06 = 67,914.68 : x
  2. Step 2: Convert to fraction form
    103,638.20/143,046.06 = 67,914.68/x
  3. Step 3: Cross multiply
    103,638.20x = 143,046.06 × 67,914.68
  4. Step 4: Simplify right side
    103,638.20x = 9,714,927,390.16
  5. Step 5: Solve for x
    x = 9,714,927,390.16/103,638.20
  6. Step 6: Final answer
    x = 93,738.87

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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.