Home / 143,721.48-198,341.76-80,059.26

Finding the Fourth Proportional to 143,721.48, 198,341.76 and 80,059.26

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Solution

The fourth proportional to 143,721.48, 198,341.76 and 80,059.26 is: 110,485.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,721.48 : 198,341.76 = 80,059.26 : x
  2. Step 2: Convert to fraction form
    143,721.48/198,341.76 = 80,059.26/x
  3. Step 3: Cross multiply
    143,721.48x = 198,341.76 × 80,059.26
  4. Step 4: Simplify right side
    143,721.48x = 15,879,094,532.70
  5. Step 5: Solve for x
    x = 15,879,094,532.70/143,721.48
  6. Step 6: Final answer
    x = 110,485.19

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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.