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Finding the Fourth Proportional to 103,699.98, 155,505.94 and 43,755.35

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Solution

The fourth proportional to 103,699.98, 155,505.94 and 43,755.35 is: 65,614.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,699.98 : 155,505.94 = 43,755.35 : x
  2. Step 2: Convert to fraction form
    103,699.98/155,505.94 = 43,755.35/x
  3. Step 3: Cross multiply
    103,699.98x = 155,505.94 × 43,755.35
  4. Step 4: Simplify right side
    103,699.98x = 6,804,216,831.78
  5. Step 5: Solve for x
    x = 6,804,216,831.78/103,699.98
  6. Step 6: Final answer
    x = 65,614.45

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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.