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Finding the Fourth Proportional to 122,880.81, 184,392.90 and 51,799.13

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Solution

The fourth proportional to 122,880.81, 184,392.90 and 51,799.13 is: 77,728.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,880.81 : 184,392.90 = 51,799.13 : x
  2. Step 2: Convert to fraction form
    122,880.81/184,392.90 = 51,799.13/x
  3. Step 3: Cross multiply
    122,880.81x = 184,392.90 × 51,799.13
  4. Step 4: Simplify right side
    122,880.81x = 9,551,390,876.21
  5. Step 5: Solve for x
    x = 9,551,390,876.21/122,880.81
  6. Step 6: Final answer
    x = 77,728.91

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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.