Home / 265,787.64-398,732.82-85,921.50

Finding the Fourth Proportional to 265,787.64, 398,732.82 and 85,921.50

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Solution

The fourth proportional to 265,787.64, 398,732.82 and 85,921.50 is: 128,898.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,787.64 : 398,732.82 = 85,921.50 : x
  2. Step 2: Convert to fraction form
    265,787.64/398,732.82 = 85,921.50/x
  3. Step 3: Cross multiply
    265,787.64x = 398,732.82 × 85,921.50
  4. Step 4: Simplify right side
    265,787.64x = 34,259,721,993.63
  5. Step 5: Solve for x
    x = 34,259,721,993.63/265,787.64
  6. Step 6: Final answer
    x = 128,898.85

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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.