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Finding the Fourth Proportional to 101,334, 139,840.92 and 56,622

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Solution

The fourth proportional to 101,334, 139,840.92 and 56,622 is: 78,138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,334 : 139,840.92 = 56,622 : x
  2. Step 2: Convert to fraction form
    101,334/139,840.92 = 56,622/x
  3. Step 3: Cross multiply
    101,334x = 139,840.92 × 56,622
  4. Step 4: Simplify right side
    101,334x = 7,918,072,572.24
  5. Step 5: Solve for x
    x = 7,918,072,572.24/101,334
  6. Step 6: Final answer
    x = 78,138.36

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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.