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Finding the Fourth Proportional to 122,152.60, 183,228.90 and 109,905.40

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Solution

The fourth proportional to 122,152.60, 183,228.90 and 109,905.40 is: 164,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,152.60 : 183,228.90 = 109,905.40 : x
  2. Step 2: Convert to fraction form
    122,152.60/183,228.90 = 109,905.40/x
  3. Step 3: Cross multiply
    122,152.60x = 183,228.90 × 109,905.40
  4. Step 4: Simplify right side
    122,152.60x = 20,137,845,546.06
  5. Step 5: Solve for x
    x = 20,137,845,546.06/122,152.60
  6. Step 6: Final answer
    x = 164,858.10

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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.