Home / 143,107.34-197,503.85-81,859.19

Finding the Fourth Proportional to 143,107.34, 197,503.85 and 81,859.19

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Solution

The fourth proportional to 143,107.34, 197,503.85 and 81,859.19 is: 112,974.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,107.34 : 197,503.85 = 81,859.19 : x
  2. Step 2: Convert to fraction form
    143,107.34/197,503.85 = 81,859.19/x
  3. Step 3: Cross multiply
    143,107.34x = 197,503.85 × 81,859.19
  4. Step 4: Simplify right side
    143,107.34x = 16,167,504,400.01
  5. Step 5: Solve for x
    x = 16,167,504,400.01/143,107.34
  6. Step 6: Final answer
    x = 112,974.67

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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.