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Finding the Fourth Proportional to 122,393.58, 183,233.75 and 90,943.05

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Solution

The fourth proportional to 122,393.58, 183,233.75 and 90,943.05 is: 136,149.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,393.58 : 183,233.75 = 90,943.05 : x
  2. Step 2: Convert to fraction form
    122,393.58/183,233.75 = 90,943.05/x
  3. Step 3: Cross multiply
    122,393.58x = 183,233.75 × 90,943.05
  4. Step 4: Simplify right side
    122,393.58x = 16,663,836,320.35
  5. Step 5: Solve for x
    x = 16,663,836,320.35/122,393.58
  6. Step 6: Final answer
    x = 136,149.59

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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.