Home / 127,857.87-191,787.27-39,111

Finding the Fourth Proportional to 127,857.87, 191,787.27 and 39,111

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Solution

The fourth proportional to 127,857.87, 191,787.27 and 39,111 is: 58,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,857.87 : 191,787.27 = 39,111 : x
  2. Step 2: Convert to fraction form
    127,857.87/191,787.27 = 39,111/x
  3. Step 3: Cross multiply
    127,857.87x = 191,787.27 × 39,111
  4. Step 4: Simplify right side
    127,857.87x = 7,500,991,916.97
  5. Step 5: Solve for x
    x = 7,500,991,916.97/127,857.87
  6. Step 6: Final answer
    x = 58,666.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.