Home / 215,843.60-323,802.40-66,080.18

Finding the Fourth Proportional to 215,843.60, 323,802.40 and 66,080.18

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Solution

The fourth proportional to 215,843.60, 323,802.40 and 66,080.18 is: 99,131.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,843.60 : 323,802.40 = 66,080.18 : x
  2. Step 2: Convert to fraction form
    215,843.60/323,802.40 = 66,080.18/x
  3. Step 3: Cross multiply
    215,843.60x = 323,802.40 × 66,080.18
  4. Step 4: Simplify right side
    215,843.60x = 21,396,920,876.43
  5. Step 5: Solve for x
    x = 21,396,920,876.43/215,843.60
  6. Step 6: Final answer
    x = 99,131.60

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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.