Home / 143,539.40-198,081.70-79,876.60

Finding the Fourth Proportional to 143,539.40, 198,081.70 and 79,876.60

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Solution

The fourth proportional to 143,539.40, 198,081.70 and 79,876.60 is: 110,228.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,539.40 : 198,081.70 = 79,876.60 : x
  2. Step 2: Convert to fraction form
    143,539.40/198,081.70 = 79,876.60/x
  3. Step 3: Cross multiply
    143,539.40x = 198,081.70 × 79,876.60
  4. Step 4: Simplify right side
    143,539.40x = 15,822,092,718.22
  5. Step 5: Solve for x
    x = 15,822,092,718.22/143,539.40
  6. Step 6: Final answer
    x = 110,228.22

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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.