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Finding the Fourth Proportional to 151,223.90, 208,687.28 and 83,239.38

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Solution

The fourth proportional to 151,223.90, 208,687.28 and 83,239.38 is: 114,869.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,223.90 : 208,687.28 = 83,239.38 : x
  2. Step 2: Convert to fraction form
    151,223.90/208,687.28 = 83,239.38/x
  3. Step 3: Cross multiply
    151,223.90x = 208,687.28 × 83,239.38
  4. Step 4: Simplify right side
    151,223.90x = 17,370,999,384.89
  5. Step 5: Solve for x
    x = 17,370,999,384.89/151,223.90
  6. Step 6: Final answer
    x = 114,869.41

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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.