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Finding the Fourth Proportional to 168,739.20, 253,108.80 and 137,246.40

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Solution

The fourth proportional to 168,739.20, 253,108.80 and 137,246.40 is: 205,869.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,739.20 : 253,108.80 = 137,246.40 : x
  2. Step 2: Convert to fraction form
    168,739.20/253,108.80 = 137,246.40/x
  3. Step 3: Cross multiply
    168,739.20x = 253,108.80 × 137,246.40
  4. Step 4: Simplify right side
    168,739.20x = 34,738,271,608.32
  5. Step 5: Solve for x
    x = 34,738,271,608.32/168,739.20
  6. Step 6: Final answer
    x = 205,869.60

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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.