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Finding the Fourth Proportional to 123,021.60, 184,532.40 and 39,915.60

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Solution

The fourth proportional to 123,021.60, 184,532.40 and 39,915.60 is: 59,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,021.60 : 184,532.40 = 39,915.60 : x
  2. Step 2: Convert to fraction form
    123,021.60/184,532.40 = 39,915.60/x
  3. Step 3: Cross multiply
    123,021.60x = 184,532.40 × 39,915.60
  4. Step 4: Simplify right side
    123,021.60x = 7,365,721,465.44
  5. Step 5: Solve for x
    x = 7,365,721,465.44/123,021.60
  6. Step 6: Final answer
    x = 59,873.40

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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.