Home / 145,743.87-218,615.85-112,512.45

Finding the Fourth Proportional to 145,743.87, 218,615.85 and 112,512.45

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Solution

The fourth proportional to 145,743.87, 218,615.85 and 112,512.45 is: 168,768.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,743.87 : 218,615.85 = 112,512.45 : x
  2. Step 2: Convert to fraction form
    145,743.87/218,615.85 = 112,512.45/x
  3. Step 3: Cross multiply
    145,743.87x = 218,615.85 × 112,512.45
  4. Step 4: Simplify right side
    145,743.87x = 24,597,004,892.33
  5. Step 5: Solve for x
    x = 24,597,004,892.33/145,743.87
  6. Step 6: Final answer
    x = 168,768.71

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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.