Home / 70,192.20-105,306.21-20,276.13

Finding the Fourth Proportional to 70,192.20, 105,306.21 and 20,276.13

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Solution

The fourth proportional to 70,192.20, 105,306.21 and 20,276.13 is: 30,419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,192.20 : 105,306.21 = 20,276.13 : x
  2. Step 2: Convert to fraction form
    70,192.20/105,306.21 = 20,276.13/x
  3. Step 3: Cross multiply
    70,192.20x = 105,306.21 × 20,276.13
  4. Step 4: Simplify right side
    70,192.20x = 2,135,202,403.77
  5. Step 5: Solve for x
    x = 2,135,202,403.77/70,192.20
  6. Step 6: Final answer
    x = 30,419.37

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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.