Home / 109,822.40-164,733.60-72,432.80

Finding the Fourth Proportional to 109,822.40, 164,733.60 and 72,432.80

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Solution

The fourth proportional to 109,822.40, 164,733.60 and 72,432.80 is: 108,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,822.40 : 164,733.60 = 72,432.80 : x
  2. Step 2: Convert to fraction form
    109,822.40/164,733.60 = 72,432.80/x
  3. Step 3: Cross multiply
    109,822.40x = 164,733.60 × 72,432.80
  4. Step 4: Simplify right side
    109,822.40x = 11,932,115,902.08
  5. Step 5: Solve for x
    x = 11,932,115,902.08/109,822.40
  6. Step 6: Final answer
    x = 108,649.20

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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.