Home / 143,056.71-197,414.28-78,525.90

Finding the Fourth Proportional to 143,056.71, 197,414.28 and 78,525.90

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Solution

The fourth proportional to 143,056.71, 197,414.28 and 78,525.90 is: 108,363.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,056.71 : 197,414.28 = 78,525.90 : x
  2. Step 2: Convert to fraction form
    143,056.71/197,414.28 = 78,525.90/x
  3. Step 3: Cross multiply
    143,056.71x = 197,414.28 × 78,525.90
  4. Step 4: Simplify right side
    143,056.71x = 15,502,134,009.85
  5. Step 5: Solve for x
    x = 15,502,134,009.85/143,056.71
  6. Step 6: Final answer
    x = 108,363.56

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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.