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Finding the Fourth Proportional to 217,060.20, 299,526.66 and 121,545

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Solution

The fourth proportional to 217,060.20, 299,526.66 and 121,545 is: 167,722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,060.20 : 299,526.66 = 121,545 : x
  2. Step 2: Convert to fraction form
    217,060.20/299,526.66 = 121,545/x
  3. Step 3: Cross multiply
    217,060.20x = 299,526.66 × 121,545
  4. Step 4: Simplify right side
    217,060.20x = 36,405,967,889.70
  5. Step 5: Solve for x
    x = 36,405,967,889.70/217,060.20
  6. Step 6: Final answer
    x = 167,722.91

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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.