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Finding the Fourth Proportional to 101,126.64, 139,553.64 and 55,804.98

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Solution

The fourth proportional to 101,126.64, 139,553.64 and 55,804.98 is: 77,010.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,126.64 : 139,553.64 = 55,804.98 : x
  2. Step 2: Convert to fraction form
    101,126.64/139,553.64 = 55,804.98/x
  3. Step 3: Cross multiply
    101,126.64x = 139,553.64 × 55,804.98
  4. Step 4: Simplify right side
    101,126.64x = 7,787,788,089.13
  5. Step 5: Solve for x
    x = 7,787,788,089.13/101,126.64
  6. Step 6: Final answer
    x = 77,010.25

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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.