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Finding the Fourth Proportional to 188,903.62, 260,685.72 and 104,020

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Solution

The fourth proportional to 188,903.62, 260,685.72 and 104,020 is: 143,546.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,903.62 : 260,685.72 = 104,020 : x
  2. Step 2: Convert to fraction form
    188,903.62/260,685.72 = 104,020/x
  3. Step 3: Cross multiply
    188,903.62x = 260,685.72 × 104,020
  4. Step 4: Simplify right side
    188,903.62x = 27,116,528,594.40
  5. Step 5: Solve for x
    x = 27,116,528,594.40/188,903.62
  6. Step 6: Final answer
    x = 143,546.90

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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.