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Finding the Fourth Proportional to 165,728.40, 248,592.60 and 120,627.60

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Solution

The fourth proportional to 165,728.40, 248,592.60 and 120,627.60 is: 180,941.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,728.40 : 248,592.60 = 120,627.60 : x
  2. Step 2: Convert to fraction form
    165,728.40/248,592.60 = 120,627.60/x
  3. Step 3: Cross multiply
    165,728.40x = 248,592.60 × 120,627.60
  4. Step 4: Simplify right side
    165,728.40x = 29,987,128,715.76
  5. Step 5: Solve for x
    x = 29,987,128,715.76/165,728.40
  6. Step 6: Final answer
    x = 180,941.40

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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.