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Finding the Fourth Proportional to 122,665.88, 183,998.82 and 39,559.88

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Solution

The fourth proportional to 122,665.88, 183,998.82 and 39,559.88 is: 59,339.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,665.88 : 183,998.82 = 39,559.88 : x
  2. Step 2: Convert to fraction form
    122,665.88/183,998.82 = 39,559.88/x
  3. Step 3: Cross multiply
    122,665.88x = 183,998.82 × 39,559.88
  4. Step 4: Simplify right side
    122,665.88x = 7,278,971,239.34
  5. Step 5: Solve for x
    x = 7,278,971,239.34/122,665.88
  6. Step 6: Final answer
    x = 59,339.82

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1.5x scale

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.