Home / 142,771.71-197,025.19-78,230.69

Finding the Fourth Proportional to 142,771.71, 197,025.19 and 78,230.69

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Solution

The fourth proportional to 142,771.71, 197,025.19 and 78,230.69 is: 107,958.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,771.71 : 197,025.19 = 78,230.69 : x
  2. Step 2: Convert to fraction form
    142,771.71/197,025.19 = 78,230.69/x
  3. Step 3: Cross multiply
    142,771.71x = 197,025.19 × 78,230.69
  4. Step 4: Simplify right side
    142,771.71x = 15,413,416,561.08
  5. Step 5: Solve for x
    x = 15,413,416,561.08/142,771.71
  6. Step 6: Final answer
    x = 107,958.48

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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.