Home / 149,095.60-205,753.56-81,112.96

Finding the Fourth Proportional to 149,095.60, 205,753.56 and 81,112.96

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Solution

The fourth proportional to 149,095.60, 205,753.56 and 81,112.96 is: 111,936.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,095.60 : 205,753.56 = 81,112.96 : x
  2. Step 2: Convert to fraction form
    149,095.60/205,753.56 = 81,112.96/x
  3. Step 3: Cross multiply
    149,095.60x = 205,753.56 × 81,112.96
  4. Step 4: Simplify right side
    149,095.60x = 16,689,280,282.14
  5. Step 5: Solve for x
    x = 16,689,280,282.14/149,095.60
  6. Step 6: Final answer
    x = 111,936.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.