Home / 149,810.17-206,736.80-81,827.18

Finding the Fourth Proportional to 149,810.17, 206,736.80 and 81,827.18

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Solution

The fourth proportional to 149,810.17, 206,736.80 and 81,827.18 is: 112,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,810.17 : 206,736.80 = 81,827.18 : x
  2. Step 2: Convert to fraction form
    149,810.17/206,736.80 = 81,827.18/x
  3. Step 3: Cross multiply
    149,810.17x = 206,736.80 × 81,827.18
  4. Step 4: Simplify right side
    149,810.17x = 16,916,689,039.37
  5. Step 5: Solve for x
    x = 16,916,689,039.37/149,810.17
  6. Step 6: Final answer
    x = 112,920.84

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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.