Home / 145,086.54-200,225.67-80,555.78

Finding the Fourth Proportional to 145,086.54, 200,225.67 and 80,555.78

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Solution

The fourth proportional to 145,086.54, 200,225.67 and 80,555.78 is: 111,170.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,086.54 : 200,225.67 = 80,555.78 : x
  2. Step 2: Convert to fraction form
    145,086.54/200,225.67 = 80,555.78/x
  3. Step 3: Cross multiply
    145,086.54x = 200,225.67 × 80,555.78
  4. Step 4: Simplify right side
    145,086.54x = 16,129,334,021.74
  5. Step 5: Solve for x
    x = 16,129,334,021.74/145,086.54
  6. Step 6: Final answer
    x = 111,170.44

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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.