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Finding the Fourth Proportional to 188,572, 260,155.14 and 107,956.07

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Solution

The fourth proportional to 188,572, 260,155.14 and 107,956.07 is: 148,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,572 : 260,155.14 = 107,956.07 : x
  2. Step 2: Convert to fraction form
    188,572/260,155.14 = 107,956.07/x
  3. Step 3: Cross multiply
    188,572x = 260,155.14 × 107,956.07
  4. Step 4: Simplify right side
    188,572x = 28,085,325,964.92
  5. Step 5: Solve for x
    x = 28,085,325,964.92/188,572
  6. Step 6: Final answer
    x = 148,936.88

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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.