Home / 109,945.40-164,918.10-71,891.60

Finding the Fourth Proportional to 109,945.40, 164,918.10 and 71,891.60

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Solution

The fourth proportional to 109,945.40, 164,918.10 and 71,891.60 is: 107,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,945.40 : 164,918.10 = 71,891.60 : x
  2. Step 2: Convert to fraction form
    109,945.40/164,918.10 = 71,891.60/x
  3. Step 3: Cross multiply
    109,945.40x = 164,918.10 × 71,891.60
  4. Step 4: Simplify right side
    109,945.40x = 11,856,226,077.96
  5. Step 5: Solve for x
    x = 11,856,226,077.96/109,945.40
  6. Step 6: Final answer
    x = 107,837.40

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1.5x scale

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.