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Finding the Fourth Proportional to 108,573.60, 162,860.40 and 71,248.80

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Solution

The fourth proportional to 108,573.60, 162,860.40 and 71,248.80 is: 106,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,573.60 : 162,860.40 = 71,248.80 : x
  2. Step 2: Convert to fraction form
    108,573.60/162,860.40 = 71,248.80/x
  3. Step 3: Cross multiply
    108,573.60x = 162,860.40 × 71,248.80
  4. Step 4: Simplify right side
    108,573.60x = 11,603,608,067.52
  5. Step 5: Solve for x
    x = 11,603,608,067.52/108,573.60
  6. Step 6: Final answer
    x = 106,873.20

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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.