Home / 143,335.82-197,787.38-85,977.50

Finding the Fourth Proportional to 143,335.82, 197,787.38 and 85,977.50

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Solution

The fourth proportional to 143,335.82, 197,787.38 and 85,977.50 is: 118,639.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,335.82 : 197,787.38 = 85,977.50 : x
  2. Step 2: Convert to fraction form
    143,335.82/197,787.38 = 85,977.50/x
  3. Step 3: Cross multiply
    143,335.82x = 197,787.38 × 85,977.50
  4. Step 4: Simplify right side
    143,335.82x = 17,005,263,045.13
  5. Step 5: Solve for x
    x = 17,005,263,045.13/143,335.82
  6. Step 6: Final answer
    x = 118,639.31

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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.