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Finding the Fourth Proportional to 128,671.34, 192,587.83 and 116,394.98

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Solution

The fourth proportional to 128,671.34, 192,587.83 and 116,394.98 is: 174,213.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,671.34 : 192,587.83 = 116,394.98 : x
  2. Step 2: Convert to fraction form
    128,671.34/192,587.83 = 116,394.98/x
  3. Step 3: Cross multiply
    128,671.34x = 192,587.83 × 116,394.98
  4. Step 4: Simplify right side
    128,671.34x = 22,416,255,367.17
  5. Step 5: Solve for x
    x = 22,416,255,367.17/128,671.34
  6. Step 6: Final answer
    x = 174,213.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.