Home / 103,940.20-155,910.30-37,390.60

Finding the Fourth Proportional to 103,940.20, 155,910.30 and 37,390.60

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Solution

The fourth proportional to 103,940.20, 155,910.30 and 37,390.60 is: 56,085.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,940.20 : 155,910.30 = 37,390.60 : x
  2. Step 2: Convert to fraction form
    103,940.20/155,910.30 = 37,390.60/x
  3. Step 3: Cross multiply
    103,940.20x = 155,910.30 × 37,390.60
  4. Step 4: Simplify right side
    103,940.20x = 5,829,579,663.18
  5. Step 5: Solve for x
    x = 5,829,579,663.18/103,940.20
  6. Step 6: Final answer
    x = 56,085.90

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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.