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Finding the Fourth Proportional to 121,992.40, 182,988.60 and 43,114.60

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Solution

The fourth proportional to 121,992.40, 182,988.60 and 43,114.60 is: 64,671.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,992.40 : 182,988.60 = 43,114.60 : x
  2. Step 2: Convert to fraction form
    121,992.40/182,988.60 = 43,114.60/x
  3. Step 3: Cross multiply
    121,992.40x = 182,988.60 × 43,114.60
  4. Step 4: Simplify right side
    121,992.40x = 7,889,480,293.56
  5. Step 5: Solve for x
    x = 7,889,480,293.56/121,992.40
  6. Step 6: Final answer
    x = 64,671.90

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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.