Home / 143,285.31-197,724.66-79,619.31

Finding the Fourth Proportional to 143,285.31, 197,724.66 and 79,619.31

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Solution

The fourth proportional to 143,285.31, 197,724.66 and 79,619.31 is: 109,869.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,285.31 : 197,724.66 = 79,619.31 : x
  2. Step 2: Convert to fraction form
    143,285.31/197,724.66 = 79,619.31/x
  3. Step 3: Cross multiply
    143,285.31x = 197,724.66 × 79,619.31
  4. Step 4: Simplify right side
    143,285.31x = 15,742,700,999.18
  5. Step 5: Solve for x
    x = 15,742,700,999.18/143,285.31
  6. Step 6: Final answer
    x = 109,869.61

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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.