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Finding the Fourth Proportional to 143,545.64, 198,092.99 and 79,883.48

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Solution

The fourth proportional to 143,545.64, 198,092.99 and 79,883.48 is: 110,239.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,545.64 : 198,092.99 = 79,883.48 : x
  2. Step 2: Convert to fraction form
    143,545.64/198,092.99 = 79,883.48/x
  3. Step 3: Cross multiply
    143,545.64x = 198,092.99 × 79,883.48
  4. Step 4: Simplify right side
    143,545.64x = 15,824,358,099.75
  5. Step 5: Solve for x
    x = 15,824,358,099.75/143,545.64
  6. Step 6: Final answer
    x = 110,239.21

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1.5x scale

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.