Home / 212,933,871.80-319,400,807.70-91,765,323.80

Finding the Fourth Proportional to 212,933,871.80, 319,400,807.70 and 91,765,323.80

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Solution

The fourth proportional to 212,933,871.80, 319,400,807.70 and 91,765,323.80 is: 137,647,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,933,871.80 : 319,400,807.70 = 91,765,323.80 : x
  2. Step 2: Convert to fraction form
    212,933,871.80/319,400,807.70 = 91,765,323.80/x
  3. Step 3: Cross multiply
    212,933,871.80x = 319,400,807.70 × 91,765,323.80
  4. Step 4: Simplify right side
    212,933,871.80x = 29,309,918,540,572,032
  5. Step 5: Solve for x
    x = 29,309,918,540,572,032/212,933,871.80
  6. Step 6: Final answer
    x = 137,647,985.70

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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.