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Finding the Fourth Proportional to 122,372.87, 183,559.30 and 43,490.21

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Solution

The fourth proportional to 122,372.87, 183,559.30 and 43,490.21 is: 65,235.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,372.87 : 183,559.30 = 43,490.21 : x
  2. Step 2: Convert to fraction form
    122,372.87/183,559.30 = 43,490.21/x
  3. Step 3: Cross multiply
    122,372.87x = 183,559.30 × 43,490.21
  4. Step 4: Simplify right side
    122,372.87x = 7,983,031,477.93
  5. Step 5: Solve for x
    x = 7,983,031,477.93/122,372.87
  6. Step 6: Final answer
    x = 65,235.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.