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Finding the Fourth Proportional to 188,515.04, 260,154 and 103,635.68

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Solution

The fourth proportional to 188,515.04, 260,154 and 103,635.68 is: 143,019.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,515.04 : 260,154 = 103,635.68 : x
  2. Step 2: Convert to fraction form
    188,515.04/260,154 = 103,635.68/x
  3. Step 3: Cross multiply
    188,515.04x = 260,154 × 103,635.68
  4. Step 4: Simplify right side
    188,515.04x = 26,961,236,694.72
  5. Step 5: Solve for x
    x = 26,961,236,694.72/188,515.04
  6. Step 6: Final answer
    x = 143,019.02

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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.