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Finding the Fourth Proportional to 188,671.55, 260,367.41 and 102,630.51

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Solution

The fourth proportional to 188,671.55, 260,367.41 and 102,630.51 is: 141,630.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,671.55 : 260,367.41 = 102,630.51 : x
  2. Step 2: Convert to fraction form
    188,671.55/260,367.41 = 102,630.51/x
  3. Step 3: Cross multiply
    188,671.55x = 260,367.41 × 102,630.51
  4. Step 4: Simplify right side
    188,671.55x = 26,721,640,332.26
  5. Step 5: Solve for x
    x = 26,721,640,332.26/188,671.55
  6. Step 6: Final answer
    x = 141,630.47

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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.