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Finding the Fourth Proportional to 120,220.60, 179,985.30 and 73,564.60

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Solution

The fourth proportional to 120,220.60, 179,985.30 and 73,564.60 is: 110,135.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,220.60 : 179,985.30 = 73,564.60 : x
  2. Step 2: Convert to fraction form
    120,220.60/179,985.30 = 73,564.60/x
  3. Step 3: Cross multiply
    120,220.60x = 179,985.30 × 73,564.60
  4. Step 4: Simplify right side
    120,220.60x = 13,240,546,600.38
  5. Step 5: Solve for x
    x = 13,240,546,600.38/120,220.60
  6. Step 6: Final answer
    x = 110,135.42

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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.