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Finding the Fourth Proportional to 203,172.51, 304,787.31 and 84,816.93

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Solution

The fourth proportional to 203,172.51, 304,787.31 and 84,816.93 is: 127,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,172.51 : 304,787.31 = 84,816.93 : x
  2. Step 2: Convert to fraction form
    203,172.51/304,787.31 = 84,816.93/x
  3. Step 3: Cross multiply
    203,172.51x = 304,787.31 × 84,816.93
  4. Step 4: Simplify right side
    203,172.51x = 25,851,123,937.16
  5. Step 5: Solve for x
    x = 25,851,123,937.16/203,172.51
  6. Step 6: Final answer
    x = 127,237.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.