Home / 149,782.08-206,699.36-81,800

Finding the Fourth Proportional to 149,782.08, 206,699.36 and 81,800

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Solution

The fourth proportional to 149,782.08, 206,699.36 and 81,800 is: 112,884.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,782.08 : 206,699.36 = 81,800 : x
  2. Step 2: Convert to fraction form
    149,782.08/206,699.36 = 81,800/x
  3. Step 3: Cross multiply
    149,782.08x = 206,699.36 × 81,800
  4. Step 4: Simplify right side
    149,782.08x = 16,908,007,648.00
  5. Step 5: Solve for x
    x = 16,908,007,648.00/149,782.08
  6. Step 6: Final answer
    x = 112,884.05

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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.