Home / 252,451,148.22-378,909,501.44-128,041,092.12

Finding the Fourth Proportional to 252,451,148.22, 378,909,501.44 and 128,041,092.12

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Solution

The fourth proportional to 252,451,148.22, 378,909,501.44 and 128,041,092.12 is: 192,179,701.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,451,148.22 : 378,909,501.44 = 128,041,092.12 : x
  2. Step 2: Convert to fraction form
    252,451,148.22/378,909,501.44 = 128,041,092.12/x
  3. Step 3: Cross multiply
    252,451,148.22x = 378,909,501.44 × 128,041,092.12
  4. Step 4: Simplify right side
    252,451,148.22x = 48,515,986,378,382,112
  5. Step 5: Solve for x
    x = 48,515,986,378,382,112/252,451,148.22
  6. Step 6: Final answer
    x = 192,179,701.78

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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.