Home / 185,787.85-256,378.65-105,215.95

Finding the Fourth Proportional to 185,787.85, 256,378.65 and 105,215.95

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Solution

The fourth proportional to 185,787.85, 256,378.65 and 105,215.95 is: 145,193.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,787.85 : 256,378.65 = 105,215.95 : x
  2. Step 2: Convert to fraction form
    185,787.85/256,378.65 = 105,215.95/x
  3. Step 3: Cross multiply
    185,787.85x = 256,378.65 × 105,215.95
  4. Step 4: Simplify right side
    185,787.85x = 26,975,121,411.49
  5. Step 5: Solve for x
    x = 26,975,121,411.49/185,787.85
  6. Step 6: Final answer
    x = 145,193.14

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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.