Home / 142,298.28-213,439.68-72,175.76

Finding the Fourth Proportional to 142,298.28, 213,439.68 and 72,175.76

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Solution

The fourth proportional to 142,298.28, 213,439.68 and 72,175.76 is: 108,259.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,298.28 : 213,439.68 = 72,175.76 : x
  2. Step 2: Convert to fraction form
    142,298.28/213,439.68 = 72,175.76/x
  3. Step 3: Cross multiply
    142,298.28x = 213,439.68 × 72,175.76
  4. Step 4: Simplify right side
    142,298.28x = 15,405,171,118.16
  5. Step 5: Solve for x
    x = 15,405,171,118.16/142,298.28
  6. Step 6: Final answer
    x = 108,259.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.