Home / 142,459.38-213,301.23-100,276.20

Finding the Fourth Proportional to 142,459.38, 213,301.23 and 100,276.20

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Solution

The fourth proportional to 142,459.38, 213,301.23 and 100,276.20 is: 150,141.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,459.38 : 213,301.23 = 100,276.20 : x
  2. Step 2: Convert to fraction form
    142,459.38/213,301.23 = 100,276.20/x
  3. Step 3: Cross multiply
    142,459.38x = 213,301.23 × 100,276.20
  4. Step 4: Simplify right side
    142,459.38x = 21,389,036,799.73
  5. Step 5: Solve for x
    x = 21,389,036,799.73/142,459.38
  6. Step 6: Final answer
    x = 150,141.30

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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.