Home / 142,883.28-197,178.98-79,219.71

Finding the Fourth Proportional to 142,883.28, 197,178.98 and 79,219.71

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Solution

The fourth proportional to 142,883.28, 197,178.98 and 79,219.71 is: 109,323.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,883.28 : 197,178.98 = 79,219.71 : x
  2. Step 2: Convert to fraction form
    142,883.28/197,178.98 = 79,219.71/x
  3. Step 3: Cross multiply
    142,883.28x = 197,178.98 × 79,219.71
  4. Step 4: Simplify right side
    142,883.28x = 15,620,461,217.60
  5. Step 5: Solve for x
    x = 15,620,461,217.60/142,883.28
  6. Step 6: Final answer
    x = 109,323.23

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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.