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Finding the Fourth Proportional to 122,641.60, 183,962.40 and 63,495.40

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Solution

The fourth proportional to 122,641.60, 183,962.40 and 63,495.40 is: 95,243.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,641.60 : 183,962.40 = 63,495.40 : x
  2. Step 2: Convert to fraction form
    122,641.60/183,962.40 = 63,495.40/x
  3. Step 3: Cross multiply
    122,641.60x = 183,962.40 × 63,495.40
  4. Step 4: Simplify right side
    122,641.60x = 11,680,766,172.96
  5. Step 5: Solve for x
    x = 11,680,766,172.96/122,641.60
  6. Step 6: Final answer
    x = 95,243.10

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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.