Home / 143,017.11-197,362.98-79,354.76

Finding the Fourth Proportional to 143,017.11, 197,362.98 and 79,354.76

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Solution

The fourth proportional to 143,017.11, 197,362.98 and 79,354.76 is: 109,509.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,017.11 : 197,362.98 = 79,354.76 : x
  2. Step 2: Convert to fraction form
    143,017.11/197,362.98 = 79,354.76/x
  3. Step 3: Cross multiply
    143,017.11x = 197,362.98 × 79,354.76
  4. Step 4: Simplify right side
    143,017.11x = 15,661,690,923.97
  5. Step 5: Solve for x
    x = 15,661,690,923.97/143,017.11
  6. Step 6: Final answer
    x = 109,509.21

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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.