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Finding the Fourth Proportional to 168,078.40, 252,117.60 and 130,024.60

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Solution

The fourth proportional to 168,078.40, 252,117.60 and 130,024.60 is: 195,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,078.40 : 252,117.60 = 130,024.60 : x
  2. Step 2: Convert to fraction form
    168,078.40/252,117.60 = 130,024.60/x
  3. Step 3: Cross multiply
    168,078.40x = 252,117.60 × 130,024.60
  4. Step 4: Simplify right side
    168,078.40x = 32,781,490,092.96
  5. Step 5: Solve for x
    x = 32,781,490,092.96/168,078.40
  6. Step 6: Final answer
    x = 195,036.90

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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.