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Finding the Fourth Proportional to 137,266.80, 205,900.20 and 48,519.60

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Solution

The fourth proportional to 137,266.80, 205,900.20 and 48,519.60 is: 72,779.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,266.80 : 205,900.20 = 48,519.60 : x
  2. Step 2: Convert to fraction form
    137,266.80/205,900.20 = 48,519.60/x
  3. Step 3: Cross multiply
    137,266.80x = 205,900.20 × 48,519.60
  4. Step 4: Simplify right side
    137,266.80x = 9,990,195,343.92
  5. Step 5: Solve for x
    x = 9,990,195,343.92/137,266.80
  6. Step 6: Final answer
    x = 72,779.40

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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.