Home / 149,400.20-206,172.32-81,417.20

Finding the Fourth Proportional to 149,400.20, 206,172.32 and 81,417.20

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Solution

The fourth proportional to 149,400.20, 206,172.32 and 81,417.20 is: 112,355.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,400.20 : 206,172.32 = 81,417.20 : x
  2. Step 2: Convert to fraction form
    149,400.20/206,172.32 = 81,417.20/x
  3. Step 3: Cross multiply
    149,400.20x = 206,172.32 × 81,417.20
  4. Step 4: Simplify right side
    149,400.20x = 16,785,973,011.90
  5. Step 5: Solve for x
    x = 16,785,973,011.90/149,400.20
  6. Step 6: Final answer
    x = 112,355.76

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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.