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Finding the Fourth Proportional to 168,006.40, 252,031.20 and 83,809.60

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Solution

The fourth proportional to 168,006.40, 252,031.20 and 83,809.60 is: 125,725.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,006.40 : 252,031.20 = 83,809.60 : x
  2. Step 2: Convert to fraction form
    168,006.40/252,031.20 = 83,809.60/x
  3. Step 3: Cross multiply
    168,006.40x = 252,031.20 × 83,809.60
  4. Step 4: Simplify right side
    168,006.40x = 21,122,634,059.52
  5. Step 5: Solve for x
    x = 21,122,634,059.52/168,006.40
  6. Step 6: Final answer
    x = 125,725.18

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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.