Home / 143,213.13-197,628.59-79,554.96

Finding the Fourth Proportional to 143,213.13, 197,628.59 and 79,554.96

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Solution

The fourth proportional to 143,213.13, 197,628.59 and 79,554.96 is: 109,782.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,213.13 : 197,628.59 = 79,554.96 : x
  2. Step 2: Convert to fraction form
    143,213.13/197,628.59 = 79,554.96/x
  3. Step 3: Cross multiply
    143,213.13x = 197,628.59 × 79,554.96
  4. Step 4: Simplify right side
    143,213.13x = 15,722,334,771.19
  5. Step 5: Solve for x
    x = 15,722,334,771.19/143,213.13
  6. Step 6: Final answer
    x = 109,782.77

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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.