Home / 143,083.11-197,454.54-79,420.76

Finding the Fourth Proportional to 143,083.11, 197,454.54 and 79,420.76

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Solution

The fourth proportional to 143,083.11, 197,454.54 and 79,420.76 is: 109,600.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,083.11 : 197,454.54 = 79,420.76 : x
  2. Step 2: Convert to fraction form
    143,083.11/197,454.54 = 79,420.76/x
  3. Step 3: Cross multiply
    143,083.11x = 197,454.54 × 79,420.76
  4. Step 4: Simplify right side
    143,083.11x = 15,681,989,632.25
  5. Step 5: Solve for x
    x = 15,681,989,632.25/143,083.11
  6. Step 6: Final answer
    x = 109,600.56

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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.