Home / 107,930.20-161,895.30-99,635.80

Finding the Fourth Proportional to 107,930.20, 161,895.30 and 99,635.80

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Solution

The fourth proportional to 107,930.20, 161,895.30 and 99,635.80 is: 149,453.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,930.20 : 161,895.30 = 99,635.80 : x
  2. Step 2: Convert to fraction form
    107,930.20/161,895.30 = 99,635.80/x
  3. Step 3: Cross multiply
    107,930.20x = 161,895.30 × 99,635.80
  4. Step 4: Simplify right side
    107,930.20x = 16,130,567,731.74
  5. Step 5: Solve for x
    x = 16,130,567,731.74/107,930.20
  6. Step 6: Final answer
    x = 149,453.70

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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.