Home / 143,430.72-197,919.20-79,758.24

Finding the Fourth Proportional to 143,430.72, 197,919.20 and 79,758.24

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Solution

The fourth proportional to 143,430.72, 197,919.20 and 79,758.24 is: 110,057.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,430.72 : 197,919.20 = 79,758.24 : x
  2. Step 2: Convert to fraction form
    143,430.72/197,919.20 = 79,758.24/x
  3. Step 3: Cross multiply
    143,430.72x = 197,919.20 × 79,758.24
  4. Step 4: Simplify right side
    143,430.72x = 15,785,687,054.21
  5. Step 5: Solve for x
    x = 15,785,687,054.21/143,430.72
  6. Step 6: Final answer
    x = 110,057.92

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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.