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Finding the Fourth Proportional to 103,544.72, 155,218.65 and 65,999.39

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Solution

The fourth proportional to 103,544.72, 155,218.65 and 65,999.39 is: 98,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,544.72 : 155,218.65 = 65,999.39 : x
  2. Step 2: Convert to fraction form
    103,544.72/155,218.65 = 65,999.39/x
  3. Step 3: Cross multiply
    103,544.72x = 155,218.65 × 65,999.39
  4. Step 4: Simplify right side
    103,544.72x = 10,244,335,440.53
  5. Step 5: Solve for x
    x = 10,244,335,440.53/103,544.72
  6. Step 6: Final answer
    x = 98,936.34

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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.