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Finding the Fourth Proportional to 102,997.80, 154,496.70 and 73,254.60

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Solution

The fourth proportional to 102,997.80, 154,496.70 and 73,254.60 is: 109,881.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,997.80 : 154,496.70 = 73,254.60 : x
  2. Step 2: Convert to fraction form
    102,997.80/154,496.70 = 73,254.60/x
  3. Step 3: Cross multiply
    102,997.80x = 154,496.70 × 73,254.60
  4. Step 4: Simplify right side
    102,997.80x = 11,317,593,959.82
  5. Step 5: Solve for x
    x = 11,317,593,959.82/102,997.80
  6. Step 6: Final answer
    x = 109,881.90

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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.