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Finding the Fourth Proportional to 169,995.06, 254,992.50 and 80,978.76

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Solution

The fourth proportional to 169,995.06, 254,992.50 and 80,978.76 is: 121,468.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,995.06 : 254,992.50 = 80,978.76 : x
  2. Step 2: Convert to fraction form
    169,995.06/254,992.50 = 80,978.76/x
  3. Step 3: Cross multiply
    169,995.06x = 254,992.50 × 80,978.76
  4. Step 4: Simplify right side
    169,995.06x = 20,648,976,459.30
  5. Step 5: Solve for x
    x = 20,648,976,459.30/169,995.06
  6. Step 6: Final answer
    x = 121,468.10

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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.