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Finding the Fourth Proportional to 146,137.86, 201,669.93 and 79,069.86

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Solution

The fourth proportional to 146,137.86, 201,669.93 and 79,069.86 is: 109,116.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,137.86 : 201,669.93 = 79,069.86 : x
  2. Step 2: Convert to fraction form
    146,137.86/201,669.93 = 79,069.86/x
  3. Step 3: Cross multiply
    146,137.86x = 201,669.93 × 79,069.86
  4. Step 4: Simplify right side
    146,137.86x = 15,946,013,131.31
  5. Step 5: Solve for x
    x = 15,946,013,131.31/146,137.86
  6. Step 6: Final answer
    x = 109,116.24

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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.