Home / 217,143.28-299,670.03-121,680.73

Finding the Fourth Proportional to 217,143.28, 299,670.03 and 121,680.73

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Solution

The fourth proportional to 217,143.28, 299,670.03 and 121,680.73 is: 167,926.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,143.28 : 299,670.03 = 121,680.73 : x
  2. Step 2: Convert to fraction form
    217,143.28/299,670.03 = 121,680.73/x
  3. Step 3: Cross multiply
    217,143.28x = 299,670.03 × 121,680.73
  4. Step 4: Simplify right side
    217,143.28x = 36,464,068,384.11
  5. Step 5: Solve for x
    x = 36,464,068,384.11/217,143.28
  6. Step 6: Final answer
    x = 167,926.30

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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.