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Finding the Fourth Proportional to 80,110.52, 120,172.64 and 20,946.09

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Solution

The fourth proportional to 80,110.52, 120,172.64 and 20,946.09 is: 31,420.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,110.52 : 120,172.64 = 20,946.09 : x
  2. Step 2: Convert to fraction form
    80,110.52/120,172.64 = 20,946.09/x
  3. Step 3: Cross multiply
    80,110.52x = 120,172.64 × 20,946.09
  4. Step 4: Simplify right side
    80,110.52x = 2,517,147,337.81
  5. Step 5: Solve for x
    x = 2,517,147,337.81/80,110.52
  6. Step 6: Final answer
    x = 31,420.93

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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.