Home / 149,864.12-206,810.07-81,879.63

Finding the Fourth Proportional to 149,864.12, 206,810.07 and 81,879.63

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Solution

The fourth proportional to 149,864.12, 206,810.07 and 81,879.63 is: 112,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,864.12 : 206,810.07 = 81,879.63 : x
  2. Step 2: Convert to fraction form
    149,864.12/206,810.07 = 81,879.63/x
  3. Step 3: Cross multiply
    149,864.12x = 206,810.07 × 81,879.63
  4. Step 4: Simplify right side
    149,864.12x = 16,933,531,510.94
  5. Step 5: Solve for x
    x = 16,933,531,510.94/149,864.12
  6. Step 6: Final answer
    x = 112,992.57

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1.5x scale

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.