Home / 109,580.20-164,274.30-74,405.80

Finding the Fourth Proportional to 109,580.20, 164,274.30 and 74,405.80

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Solution

The fourth proportional to 109,580.20, 164,274.30 and 74,405.80 is: 111,543.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,580.20 : 164,274.30 = 74,405.80 : x
  2. Step 2: Convert to fraction form
    109,580.20/164,274.30 = 74,405.80/x
  3. Step 3: Cross multiply
    109,580.20x = 164,274.30 × 74,405.80
  4. Step 4: Simplify right side
    109,580.20x = 12,222,960,710.94
  5. Step 5: Solve for x
    x = 12,222,960,710.94/109,580.20
  6. Step 6: Final answer
    x = 111,543.52

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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.