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Finding the Fourth Proportional to 101,165.15, 139,607.93 and 55,843.16

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Solution

The fourth proportional to 101,165.15, 139,607.93 and 55,843.16 is: 77,063.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,165.15 : 139,607.93 = 55,843.16 : x
  2. Step 2: Convert to fraction form
    101,165.15/139,607.93 = 55,843.16/x
  3. Step 3: Cross multiply
    101,165.15x = 139,607.93 × 55,843.16
  4. Step 4: Simplify right side
    101,165.15x = 7,796,147,972.26
  5. Step 5: Solve for x
    x = 7,796,147,972.26/101,165.15
  6. Step 6: Final answer
    x = 77,063.57

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1.5x scale

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.