Home / 149,241.20-205,946.16-81,256.46

Finding the Fourth Proportional to 149,241.20, 205,946.16 and 81,256.46

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Solution

The fourth proportional to 149,241.20, 205,946.16 and 81,256.46 is: 112,130.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,241.20 : 205,946.16 = 81,256.46 : x
  2. Step 2: Convert to fraction form
    149,241.20/205,946.16 = 81,256.46/x
  3. Step 3: Cross multiply
    149,241.20x = 205,946.16 × 81,256.46
  4. Step 4: Simplify right side
    149,241.20x = 16,734,455,912.19
  5. Step 5: Solve for x
    x = 16,734,455,912.19/149,241.20
  6. Step 6: Final answer
    x = 112,130.27

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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.