Home / 103,676.06-155,511.21-72,531.74

Finding the Fourth Proportional to 103,676.06, 155,511.21 and 72,531.74

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Solution

The fourth proportional to 103,676.06, 155,511.21 and 72,531.74 is: 108,795.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,676.06 : 155,511.21 = 72,531.74 : x
  2. Step 2: Convert to fraction form
    103,676.06/155,511.21 = 72,531.74/x
  3. Step 3: Cross multiply
    103,676.06x = 155,511.21 × 72,531.74
  4. Step 4: Simplify right side
    103,676.06x = 11,279,498,650.81
  5. Step 5: Solve for x
    x = 11,279,498,650.81/103,676.06
  6. Step 6: Final answer
    x = 108,795.60

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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.