Home / 251,945.99-347,685.45-138,768.74

Finding the Fourth Proportional to 251,945.99, 347,685.45 and 138,768.74

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Solution

The fourth proportional to 251,945.99, 347,685.45 and 138,768.74 is: 191,500.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,945.99 : 347,685.45 = 138,768.74 : x
  2. Step 2: Convert to fraction form
    251,945.99/347,685.45 = 138,768.74/x
  3. Step 3: Cross multiply
    251,945.99x = 347,685.45 × 138,768.74
  4. Step 4: Simplify right side
    251,945.99x = 48,247,870,074.41
  5. Step 5: Solve for x
    x = 48,247,870,074.41/251,945.99
  6. Step 6: Final answer
    x = 191,500.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.