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Finding the Fourth Proportional to 188,697.32, 260,402.29 and 103,812.56

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Solution

The fourth proportional to 188,697.32, 260,402.29 and 103,812.56 is: 143,261.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,697.32 : 260,402.29 = 103,812.56 : x
  2. Step 2: Convert to fraction form
    188,697.32/260,402.29 = 103,812.56/x
  3. Step 3: Cross multiply
    188,697.32x = 260,402.29 × 103,812.56
  4. Step 4: Simplify right side
    188,697.32x = 27,033,027,052.75
  5. Step 5: Solve for x
    x = 27,033,027,052.75/188,697.32
  6. Step 6: Final answer
    x = 143,261.32

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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.