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Finding the Fourth Proportional to 122,637.60, 183,567.60 and 87,645.60

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Solution

The fourth proportional to 122,637.60, 183,567.60 and 87,645.60 is: 131,190.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,637.60 : 183,567.60 = 87,645.60 : x
  2. Step 2: Convert to fraction form
    122,637.60/183,567.60 = 87,645.60/x
  3. Step 3: Cross multiply
    122,637.60x = 183,567.60 × 87,645.60
  4. Step 4: Simplify right side
    122,637.60x = 16,088,892,442.56
  5. Step 5: Solve for x
    x = 16,088,892,442.56/122,637.60
  6. Step 6: Final answer
    x = 131,190.54

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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.