Home / 142,958.08-197,305.77-79,316.38

Finding the Fourth Proportional to 142,958.08, 197,305.77 and 79,316.38

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Solution

The fourth proportional to 142,958.08, 197,305.77 and 79,316.38 is: 109,469.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,958.08 : 197,305.77 = 79,316.38 : x
  2. Step 2: Convert to fraction form
    142,958.08/197,305.77 = 79,316.38/x
  3. Step 3: Cross multiply
    142,958.08x = 197,305.77 × 79,316.38
  4. Step 4: Simplify right side
    142,958.08x = 15,649,579,429.51
  5. Step 5: Solve for x
    x = 15,649,579,429.51/142,958.08
  6. Step 6: Final answer
    x = 109,469.71

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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.