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Finding the Fourth Proportional to 188,506.26, 260,154.45 and 103,639.32

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Solution

The fourth proportional to 188,506.26, 260,154.45 and 103,639.32 is: 143,030.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,506.26 : 260,154.45 = 103,639.32 : x
  2. Step 2: Convert to fraction form
    188,506.26/260,154.45 = 103,639.32/x
  3. Step 3: Cross multiply
    188,506.26x = 260,154.45 × 103,639.32
  4. Step 4: Simplify right side
    188,506.26x = 26,962,230,292.97
  5. Step 5: Solve for x
    x = 26,962,230,292.97/188,506.26
  6. Step 6: Final answer
    x = 143,030.95

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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.