Home / 143,154.90-197,535.18-79,480.44

Finding the Fourth Proportional to 143,154.90, 197,535.18 and 79,480.44

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Solution

The fourth proportional to 143,154.90, 197,535.18 and 79,480.44 is: 109,672.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,154.90 : 197,535.18 = 79,480.44 : x
  2. Step 2: Convert to fraction form
    143,154.90/197,535.18 = 79,480.44/x
  3. Step 3: Cross multiply
    143,154.90x = 197,535.18 × 79,480.44
  4. Step 4: Simplify right side
    143,154.90x = 15,700,183,021.88
  5. Step 5: Solve for x
    x = 15,700,183,021.88/143,154.90
  6. Step 6: Final answer
    x = 109,672.69

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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.