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Finding the Fourth Proportional to 188,522.52, 260,154.38 and 103,639

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Solution

The fourth proportional to 188,522.52, 260,154.38 and 103,639 is: 143,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,522.52 : 260,154.38 = 103,639 : x
  2. Step 2: Convert to fraction form
    188,522.52/260,154.38 = 103,639/x
  3. Step 3: Cross multiply
    188,522.52x = 260,154.38 × 103,639
  4. Step 4: Simplify right side
    188,522.52x = 26,962,139,788.82
  5. Step 5: Solve for x
    x = 26,962,139,788.82/188,522.52
  6. Step 6: Final answer
    x = 143,018.14

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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.