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Finding the Fourth Proportional to 122,689.39, 183,902.86 and 56,029.63

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Solution

The fourth proportional to 122,689.39, 183,902.86 and 56,029.63 is: 83,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,689.39 : 183,902.86 = 56,029.63 : x
  2. Step 2: Convert to fraction form
    122,689.39/183,902.86 = 56,029.63/x
  3. Step 3: Cross multiply
    122,689.39x = 183,902.86 × 56,029.63
  4. Step 4: Simplify right side
    122,689.39x = 10,304,008,002.08
  5. Step 5: Solve for x
    x = 10,304,008,002.08/122,689.39
  6. Step 6: Final answer
    x = 83,984.51

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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.