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Finding the Fourth Proportional to 93,445.70, 140,168.55 and 81,781.70

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Solution

The fourth proportional to 93,445.70, 140,168.55 and 81,781.70 is: 122,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,445.70 : 140,168.55 = 81,781.70 : x
  2. Step 2: Convert to fraction form
    93,445.70/140,168.55 = 81,781.70/x
  3. Step 3: Cross multiply
    93,445.70x = 140,168.55 × 81,781.70
  4. Step 4: Simplify right side
    93,445.70x = 11,463,222,305.54
  5. Step 5: Solve for x
    x = 11,463,222,305.54/93,445.70
  6. Step 6: Final answer
    x = 122,672.55

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1.5x scale

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.