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Finding the Fourth Proportional to 124,804.70, 172,230.18 and 68,216.48

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Solution

The fourth proportional to 124,804.70, 172,230.18 and 68,216.48 is: 94,138.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,804.70 : 172,230.18 = 68,216.48 : x
  2. Step 2: Convert to fraction form
    124,804.70/172,230.18 = 68,216.48/x
  3. Step 3: Cross multiply
    124,804.70x = 172,230.18 × 68,216.48
  4. Step 4: Simplify right side
    124,804.70x = 11,748,936,629.37
  5. Step 5: Solve for x
    x = 11,748,936,629.37/124,804.70
  6. Step 6: Final answer
    x = 94,138.58

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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.