Home / 142,993.35-197,354.45-79,351.65

Finding the Fourth Proportional to 142,993.35, 197,354.45 and 79,351.65

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Solution

The fourth proportional to 142,993.35, 197,354.45 and 79,351.65 is: 109,518.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,993.35 : 197,354.45 = 79,351.65 : x
  2. Step 2: Convert to fraction form
    142,993.35/197,354.45 = 79,351.65/x
  3. Step 3: Cross multiply
    142,993.35x = 197,354.45 × 79,351.65
  4. Step 4: Simplify right side
    142,993.35x = 15,660,401,242.34
  5. Step 5: Solve for x
    x = 15,660,401,242.34/142,993.35
  6. Step 6: Final answer
    x = 109,518.39

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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.