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Finding the Fourth Proportional to 152,787.30, 210,843.29 and 84,800.28

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Solution

The fourth proportional to 152,787.30, 210,843.29 and 84,800.28 is: 117,022.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,787.30 : 210,843.29 = 84,800.28 : x
  2. Step 2: Convert to fraction form
    152,787.30/210,843.29 = 84,800.28/x
  3. Step 3: Cross multiply
    152,787.30x = 210,843.29 × 84,800.28
  4. Step 4: Simplify right side
    152,787.30x = 17,879,570,028.12
  5. Step 5: Solve for x
    x = 17,879,570,028.12/152,787.30
  6. Step 6: Final answer
    x = 117,022.62

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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.