Home / 143,135.18-197,522.79-79,471.34

Finding the Fourth Proportional to 143,135.18, 197,522.79 and 79,471.34

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Solution

The fourth proportional to 143,135.18, 197,522.79 and 79,471.34 is: 109,668.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,135.18 : 197,522.79 = 79,471.34 : x
  2. Step 2: Convert to fraction form
    143,135.18/197,522.79 = 79,471.34/x
  3. Step 3: Cross multiply
    143,135.18x = 197,522.79 × 79,471.34
  4. Step 4: Simplify right side
    143,135.18x = 15,697,400,801.84
  5. Step 5: Solve for x
    x = 15,697,400,801.84/143,135.18
  6. Step 6: Final answer
    x = 109,668.36

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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.