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Finding the Fourth Proportional to 122,980.60, 184,470.90 and 108,465.40

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Solution

The fourth proportional to 122,980.60, 184,470.90 and 108,465.40 is: 162,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,980.60 : 184,470.90 = 108,465.40 : x
  2. Step 2: Convert to fraction form
    122,980.60/184,470.90 = 108,465.40/x
  3. Step 3: Cross multiply
    122,980.60x = 184,470.90 × 108,465.40
  4. Step 4: Simplify right side
    122,980.60x = 20,008,709,956.86
  5. Step 5: Solve for x
    x = 20,008,709,956.86/122,980.60
  6. Step 6: Final answer
    x = 162,698.10

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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.