Home / 142,458.38-213,299.74-100,275.20

Finding the Fourth Proportional to 142,458.38, 213,299.74 and 100,275.20

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Solution

The fourth proportional to 142,458.38, 213,299.74 and 100,275.20 is: 150,139.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,458.38 : 213,299.74 = 100,275.20 : x
  2. Step 2: Convert to fraction form
    142,458.38/213,299.74 = 100,275.20/x
  3. Step 3: Cross multiply
    142,458.38x = 213,299.74 × 100,275.20
  4. Step 4: Simplify right side
    142,458.38x = 21,388,672,520.57
  5. Step 5: Solve for x
    x = 21,388,672,520.57/142,458.38
  6. Step 6: Final answer
    x = 150,139.80

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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.