Home / 142,861.20-197,140.68-79,208.16

Finding the Fourth Proportional to 142,861.20, 197,140.68 and 79,208.16

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Solution

The fourth proportional to 142,861.20, 197,140.68 and 79,208.16 is: 109,302.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,861.20 : 197,140.68 = 79,208.16 : x
  2. Step 2: Convert to fraction form
    142,861.20/197,140.68 = 79,208.16/x
  3. Step 3: Cross multiply
    142,861.20x = 197,140.68 × 79,208.16
  4. Step 4: Simplify right side
    142,861.20x = 15,615,150,523.95
  5. Step 5: Solve for x
    x = 15,615,150,523.95/142,861.20
  6. Step 6: Final answer
    x = 109,302.95

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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.