Home / 122,954.40-184,431.60-78,631.20

Finding the Fourth Proportional to 122,954.40, 184,431.60 and 78,631.20

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Solution

The fourth proportional to 122,954.40, 184,431.60 and 78,631.20 is: 117,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,954.40 : 184,431.60 = 78,631.20 : x
  2. Step 2: Convert to fraction form
    122,954.40/184,431.60 = 78,631.20/x
  3. Step 3: Cross multiply
    122,954.40x = 184,431.60 × 78,631.20
  4. Step 4: Simplify right side
    122,954.40x = 14,502,078,025.92
  5. Step 5: Solve for x
    x = 14,502,078,025.92/122,954.40
  6. Step 6: Final answer
    x = 117,946.80

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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.