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Finding the Fourth Proportional to 151,324.68, 208,819.80 and 83,328.72

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Solution

The fourth proportional to 151,324.68, 208,819.80 and 83,328.72 is: 114,989.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,324.68 : 208,819.80 = 83,328.72 : x
  2. Step 2: Convert to fraction form
    151,324.68/208,819.80 = 83,328.72/x
  3. Step 3: Cross multiply
    151,324.68x = 208,819.80 × 83,328.72
  4. Step 4: Simplify right side
    151,324.68x = 17,400,686,644.66
  5. Step 5: Solve for x
    x = 17,400,686,644.66/151,324.68
  6. Step 6: Final answer
    x = 114,989.09

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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.