Home / 143,140.15-197,514.82-79,465.65

Finding the Fourth Proportional to 143,140.15, 197,514.82 and 79,465.65

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Solution

The fourth proportional to 143,140.15, 197,514.82 and 79,465.65 is: 109,652.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,140.15 : 197,514.82 = 79,465.65 : x
  2. Step 2: Convert to fraction form
    143,140.15/197,514.82 = 79,465.65/x
  3. Step 3: Cross multiply
    143,140.15x = 197,514.82 × 79,465.65
  4. Step 4: Simplify right side
    143,140.15x = 15,695,643,555.93
  5. Step 5: Solve for x
    x = 15,695,643,555.93/143,140.15
  6. Step 6: Final answer
    x = 109,652.28

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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.