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Finding the Fourth Proportional to 101,246.78, 139,722.04 and 58,805.32

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Solution

The fourth proportional to 101,246.78, 139,722.04 and 58,805.32 is: 81,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,246.78 : 139,722.04 = 58,805.32 : x
  2. Step 2: Convert to fraction form
    101,246.78/139,722.04 = 58,805.32/x
  3. Step 3: Cross multiply
    101,246.78x = 139,722.04 × 58,805.32
  4. Step 4: Simplify right side
    101,246.78x = 8,216,399,273.25
  5. Step 5: Solve for x
    x = 8,216,399,273.25/101,246.78
  6. Step 6: Final answer
    x = 81,152.20

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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.