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Finding the Fourth Proportional to 162,004.60, 243,128.40 and 83,078.20

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Solution

The fourth proportional to 162,004.60, 243,128.40 and 83,078.20 is: 124,679.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,004.60 : 243,128.40 = 83,078.20 : x
  2. Step 2: Convert to fraction form
    162,004.60/243,128.40 = 83,078.20/x
  3. Step 3: Cross multiply
    162,004.60x = 243,128.40 × 83,078.20
  4. Step 4: Simplify right side
    162,004.60x = 20,198,669,840.88
  5. Step 5: Solve for x
    x = 20,198,669,840.88/162,004.60
  6. Step 6: Final answer
    x = 124,679.61

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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.