Home / 142,300.28-213,442.68-72,177.76

Finding the Fourth Proportional to 142,300.28, 213,442.68 and 72,177.76

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Solution

The fourth proportional to 142,300.28, 213,442.68 and 72,177.76 is: 108,262.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,300.28 : 213,442.68 = 72,177.76 : x
  2. Step 2: Convert to fraction form
    142,300.28/213,442.68 = 72,177.76/x
  3. Step 3: Cross multiply
    142,300.28x = 213,442.68 × 72,177.76
  4. Step 4: Simplify right side
    142,300.28x = 15,405,814,530.80
  5. Step 5: Solve for x
    x = 15,405,814,530.80/142,300.28
  6. Step 6: Final answer
    x = 108,262.71

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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.