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Finding the Fourth Proportional to 123,093.40, 184,640.10 and 78,770.20

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Solution

The fourth proportional to 123,093.40, 184,640.10 and 78,770.20 is: 118,155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,093.40 : 184,640.10 = 78,770.20 : x
  2. Step 2: Convert to fraction form
    123,093.40/184,640.10 = 78,770.20/x
  3. Step 3: Cross multiply
    123,093.40x = 184,640.10 × 78,770.20
  4. Step 4: Simplify right side
    123,093.40x = 14,544,137,605.02
  5. Step 5: Solve for x
    x = 14,544,137,605.02/123,093.40
  6. Step 6: Final answer
    x = 118,155.30

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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.