Home / 103,941.20-155,566.20-91,499.60

Finding the Fourth Proportional to 103,941.20, 155,566.20 and 91,499.60

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Solution

The fourth proportional to 103,941.20, 155,566.20 and 91,499.60 is: 136,945.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,941.20 : 155,566.20 = 91,499.60 : x
  2. Step 2: Convert to fraction form
    103,941.20/155,566.20 = 91,499.60/x
  3. Step 3: Cross multiply
    103,941.20x = 155,566.20 × 91,499.60
  4. Step 4: Simplify right side
    103,941.20x = 14,234,245,073.52
  5. Step 5: Solve for x
    x = 14,234,245,073.52/103,941.20
  6. Step 6: Final answer
    x = 136,945.17

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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.