Home / 185,787.82-256,378.61-105,215.92

Finding the Fourth Proportional to 185,787.82, 256,378.61 and 105,215.92

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Solution

The fourth proportional to 185,787.82, 256,378.61 and 105,215.92 is: 145,193.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,787.82 : 256,378.61 = 105,215.92 : x
  2. Step 2: Convert to fraction form
    185,787.82/256,378.61 = 105,215.92/x
  3. Step 3: Cross multiply
    185,787.82x = 256,378.61 × 105,215.92
  4. Step 4: Simplify right side
    185,787.82x = 26,975,112,670.25
  5. Step 5: Solve for x
    x = 26,975,112,670.25/185,787.82
  6. Step 6: Final answer
    x = 145,193.12

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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.