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Finding the Fourth Proportional to 122,439, 183,649.86 and 60,087

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Solution

The fourth proportional to 122,439, 183,649.86 and 60,087 is: 90,126.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,439 : 183,649.86 = 60,087 : x
  2. Step 2: Convert to fraction form
    122,439/183,649.86 = 60,087/x
  3. Step 3: Cross multiply
    122,439x = 183,649.86 × 60,087
  4. Step 4: Simplify right side
    122,439x = 11,034,969,137.82
  5. Step 5: Solve for x
    x = 11,034,969,137.82/122,439
  6. Step 6: Final answer
    x = 90,126.26

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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.