Home / 143,363.80-197,846.32-78,829.68

Finding the Fourth Proportional to 143,363.80, 197,846.32 and 78,829.68

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Solution

The fourth proportional to 143,363.80, 197,846.32 and 78,829.68 is: 108,787.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,363.80 : 197,846.32 = 78,829.68 : x
  2. Step 2: Convert to fraction form
    143,363.80/197,846.32 = 78,829.68/x
  3. Step 3: Cross multiply
    143,363.80x = 197,846.32 × 78,829.68
  4. Step 4: Simplify right side
    143,363.80x = 15,596,162,094.78
  5. Step 5: Solve for x
    x = 15,596,162,094.78/143,363.80
  6. Step 6: Final answer
    x = 108,787.31

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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.