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Finding the Fourth Proportional to 123,257.60, 184,886.40 and 118,419.20

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Solution

The fourth proportional to 123,257.60, 184,886.40 and 118,419.20 is: 177,628.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,257.60 : 184,886.40 = 118,419.20 : x
  2. Step 2: Convert to fraction form
    123,257.60/184,886.40 = 118,419.20/x
  3. Step 3: Cross multiply
    123,257.60x = 184,886.40 × 118,419.20
  4. Step 4: Simplify right side
    123,257.60x = 21,894,099,578.88
  5. Step 5: Solve for x
    x = 21,894,099,578.88/123,257.60
  6. Step 6: Final answer
    x = 177,628.80

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1.5x scale

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.