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Finding the Fourth Proportional to 155,690.51, 214,887.87 and 101,944.31

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Solution

The fourth proportional to 155,690.51, 214,887.87 and 101,944.31 is: 140,706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,690.51 : 214,887.87 = 101,944.31 : x
  2. Step 2: Convert to fraction form
    155,690.51/214,887.87 = 101,944.31/x
  3. Step 3: Cross multiply
    155,690.51x = 214,887.87 × 101,944.31
  4. Step 4: Simplify right side
    155,690.51x = 21,906,594,560.08
  5. Step 5: Solve for x
    x = 21,906,594,560.08/155,690.51
  6. Step 6: Final answer
    x = 140,706.04

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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.