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Finding the Fourth Proportional to 172,215.60, 257,862.60 and 109,546.80

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Solution

The fourth proportional to 172,215.60, 257,862.60 and 109,546.80 is: 164,027.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,215.60 : 257,862.60 = 109,546.80 : x
  2. Step 2: Convert to fraction form
    172,215.60/257,862.60 = 109,546.80/x
  3. Step 3: Cross multiply
    172,215.60x = 257,862.60 × 109,546.80
  4. Step 4: Simplify right side
    172,215.60x = 28,248,022,669.68
  5. Step 5: Solve for x
    x = 28,248,022,669.68/172,215.60
  6. Step 6: Final answer
    x = 164,027.08

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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.