Home / 149,267.64-205,986.38-81,285.45

Finding the Fourth Proportional to 149,267.64, 205,986.38 and 81,285.45

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Solution

The fourth proportional to 149,267.64, 205,986.38 and 81,285.45 is: 112,172.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,267.64 : 205,986.38 = 81,285.45 : x
  2. Step 2: Convert to fraction form
    149,267.64/205,986.38 = 81,285.45/x
  3. Step 3: Cross multiply
    149,267.64x = 205,986.38 × 81,285.45
  4. Step 4: Simplify right side
    149,267.64x = 16,743,695,185.74
  5. Step 5: Solve for x
    x = 16,743,695,185.74/149,267.64
  6. Step 6: Final answer
    x = 112,172.30

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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.