Home / 103,612.20-155,418.30-95,317.80

Finding the Fourth Proportional to 103,612.20, 155,418.30 and 95,317.80

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Solution

The fourth proportional to 103,612.20, 155,418.30 and 95,317.80 is: 142,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,612.20 : 155,418.30 = 95,317.80 : x
  2. Step 2: Convert to fraction form
    103,612.20/155,418.30 = 95,317.80/x
  3. Step 3: Cross multiply
    103,612.20x = 155,418.30 × 95,317.80
  4. Step 4: Simplify right side
    103,612.20x = 14,814,130,435.74
  5. Step 5: Solve for x
    x = 14,814,130,435.74/103,612.20
  6. Step 6: Final answer
    x = 142,976.70

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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.