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Finding the Fourth Proportional to 118,594.50, 163,699.29 and 85,157.70

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Solution

The fourth proportional to 118,594.50, 163,699.29 and 85,157.70 is: 117,545.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,594.50 : 163,699.29 = 85,157.70 : x
  2. Step 2: Convert to fraction form
    118,594.50/163,699.29 = 85,157.70/x
  3. Step 3: Cross multiply
    118,594.50x = 163,699.29 × 85,157.70
  4. Step 4: Simplify right side
    118,594.50x = 13,940,255,028.03
  5. Step 5: Solve for x
    x = 13,940,255,028.03/118,594.50
  6. Step 6: Final answer
    x = 117,545.54

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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.