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Finding the Fourth Proportional to 123,032.20, 184,110.90 and 85,415.80

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Solution

The fourth proportional to 123,032.20, 184,110.90 and 85,415.80 is: 127,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,032.20 : 184,110.90 = 85,415.80 : x
  2. Step 2: Convert to fraction form
    123,032.20/184,110.90 = 85,415.80/x
  3. Step 3: Cross multiply
    123,032.20x = 184,110.90 × 85,415.80
  4. Step 4: Simplify right side
    123,032.20x = 15,725,979,812.22
  5. Step 5: Solve for x
    x = 15,725,979,812.22/123,032.20
  6. Step 6: Final answer
    x = 127,820.03

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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.