Home / 149,154.93-205,834.68-81,172.44

Finding the Fourth Proportional to 149,154.93, 205,834.68 and 81,172.44

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Solution

The fourth proportional to 149,154.93, 205,834.68 and 81,172.44 is: 112,018.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,154.93 : 205,834.68 = 81,172.44 : x
  2. Step 2: Convert to fraction form
    149,154.93/205,834.68 = 81,172.44/x
  3. Step 3: Cross multiply
    149,154.93x = 205,834.68 × 81,172.44
  4. Step 4: Simplify right side
    149,154.93x = 16,708,103,212.22
  5. Step 5: Solve for x
    x = 16,708,103,212.22/149,154.93
  6. Step 6: Final answer
    x = 112,018.44

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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.