Home / 217,255.76-299,812.55-121,762.43

Finding the Fourth Proportional to 217,255.76, 299,812.55 and 121,762.43

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Solution

The fourth proportional to 217,255.76, 299,812.55 and 121,762.43 is: 168,031.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,255.76 : 299,812.55 = 121,762.43 : x
  2. Step 2: Convert to fraction form
    217,255.76/299,812.55 = 121,762.43/x
  3. Step 3: Cross multiply
    217,255.76x = 299,812.55 × 121,762.43
  4. Step 4: Simplify right side
    217,255.76x = 36,505,902,524.62
  5. Step 5: Solve for x
    x = 36,505,902,524.62/217,255.76
  6. Step 6: Final answer
    x = 168,031.92

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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.