Home / 253,225.32-379,727.20-120,143.54

Finding the Fourth Proportional to 253,225.32, 379,727.20 and 120,143.54

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Solution

The fourth proportional to 253,225.32, 379,727.20 and 120,143.54 is: 180,162.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,225.32 : 379,727.20 = 120,143.54 : x
  2. Step 2: Convert to fraction form
    253,225.32/379,727.20 = 120,143.54/x
  3. Step 3: Cross multiply
    253,225.32x = 379,727.20 × 120,143.54
  4. Step 4: Simplify right side
    253,225.32x = 45,621,767,542.93
  5. Step 5: Solve for x
    x = 45,621,767,542.93/253,225.32
  6. Step 6: Final answer
    x = 180,162.74

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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.