Home / 109,386.90-164,080.35-71,997.30

Finding the Fourth Proportional to 109,386.90, 164,080.35 and 71,997.30

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Solution

The fourth proportional to 109,386.90, 164,080.35 and 71,997.30 is: 107,995.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,386.90 : 164,080.35 = 71,997.30 : x
  2. Step 2: Convert to fraction form
    109,386.90/164,080.35 = 71,997.30/x
  3. Step 3: Cross multiply
    109,386.90x = 164,080.35 × 71,997.30
  4. Step 4: Simplify right side
    109,386.90x = 11,813,342,183.06
  5. Step 5: Solve for x
    x = 11,813,342,183.06/109,386.90
  6. Step 6: Final answer
    x = 107,995.95

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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.