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Finding the Fourth Proportional to 123,086.70, 184,630.05 and 81,023.40

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Solution

The fourth proportional to 123,086.70, 184,630.05 and 81,023.40 is: 121,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,086.70 : 184,630.05 = 81,023.40 : x
  2. Step 2: Convert to fraction form
    123,086.70/184,630.05 = 81,023.40/x
  3. Step 3: Cross multiply
    123,086.70x = 184,630.05 × 81,023.40
  4. Step 4: Simplify right side
    123,086.70x = 14,959,354,393.17
  5. Step 5: Solve for x
    x = 14,959,354,393.17/123,086.70
  6. Step 6: Final answer
    x = 121,535.10

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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.