Home / 143,572.05-198,131.32-79,048.80

Finding the Fourth Proportional to 143,572.05, 198,131.32 and 79,048.80

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Solution

The fourth proportional to 143,572.05, 198,131.32 and 79,048.80 is: 109,088.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,572.05 : 198,131.32 = 79,048.80 : x
  2. Step 2: Convert to fraction form
    143,572.05/198,131.32 = 79,048.80/x
  3. Step 3: Cross multiply
    143,572.05x = 198,131.32 × 79,048.80
  4. Step 4: Simplify right side
    143,572.05x = 15,662,043,088.42
  5. Step 5: Solve for x
    x = 15,662,043,088.42/143,572.05
  6. Step 6: Final answer
    x = 109,088.39

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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.