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Finding the Fourth Proportional to 188,954.10, 260,744.88 and 104,071.20

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Solution

The fourth proportional to 188,954.10, 260,744.88 and 104,071.20 is: 143,611.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,954.10 : 260,744.88 = 104,071.20 : x
  2. Step 2: Convert to fraction form
    188,954.10/260,744.88 = 104,071.20/x
  3. Step 3: Cross multiply
    188,954.10x = 260,744.88 × 104,071.20
  4. Step 4: Simplify right side
    188,954.10x = 27,136,032,555.46
  5. Step 5: Solve for x
    x = 27,136,032,555.46/188,954.10
  6. Step 6: Final answer
    x = 143,611.77

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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.