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Finding the Fourth Proportional to 124,980.87, 172,473.62 and 68,392.25

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Solution

The fourth proportional to 124,980.87, 172,473.62 and 68,392.25 is: 94,381.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,980.87 : 172,473.62 = 68,392.25 : x
  2. Step 2: Convert to fraction form
    124,980.87/172,473.62 = 68,392.25/x
  3. Step 3: Cross multiply
    124,980.87x = 172,473.62 × 68,392.25
  4. Step 4: Simplify right side
    124,980.87x = 11,795,858,595.48
  5. Step 5: Solve for x
    x = 11,795,858,595.48/124,980.87
  6. Step 6: Final answer
    x = 94,381.31

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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.