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Finding the Fourth Proportional to 136,388.49, 204,582.33 and 61,420.86

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Solution

The fourth proportional to 136,388.49, 204,582.33 and 61,420.86 is: 92,131.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,388.49 : 204,582.33 = 61,420.86 : x
  2. Step 2: Convert to fraction form
    136,388.49/204,582.33 = 61,420.86/x
  3. Step 3: Cross multiply
    136,388.49x = 204,582.33 × 61,420.86
  4. Step 4: Simplify right side
    136,388.49x = 12,565,622,649.40
  5. Step 5: Solve for x
    x = 12,565,622,649.40/136,388.49
  6. Step 6: Final answer
    x = 92,131.11

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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.