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Finding the Fourth Proportional to 123,261.60, 184,784.40 and 83,690.40

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Solution

The fourth proportional to 123,261.60, 184,784.40 and 83,690.40 is: 125,462.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,261.60 : 184,784.40 = 83,690.40 : x
  2. Step 2: Convert to fraction form
    123,261.60/184,784.40 = 83,690.40/x
  3. Step 3: Cross multiply
    123,261.60x = 184,784.40 × 83,690.40
  4. Step 4: Simplify right side
    123,261.60x = 15,464,680,349.76
  5. Step 5: Solve for x
    x = 15,464,680,349.76/123,261.60
  6. Step 6: Final answer
    x = 125,462.27

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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.