Home / 109,971.20-164,930.40-31,092.80

Finding the Fourth Proportional to 109,971.20, 164,930.40 and 31,092.80

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Solution

The fourth proportional to 109,971.20, 164,930.40 and 31,092.80 is: 46,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,971.20 : 164,930.40 = 31,092.80 : x
  2. Step 2: Convert to fraction form
    109,971.20/164,930.40 = 31,092.80/x
  3. Step 3: Cross multiply
    109,971.20x = 164,930.40 × 31,092.80
  4. Step 4: Simplify right side
    109,971.20x = 5,128,147,941.12
  5. Step 5: Solve for x
    x = 5,128,147,941.12/109,971.20
  6. Step 6: Final answer
    x = 46,631.74

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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.