Home / 287,784,190.80-431,581,807.80-106,007,749.20

Finding the Fourth Proportional to 287,784,190.80, 431,581,807.80 and 106,007,749.20

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Solution

The fourth proportional to 287,784,190.80, 431,581,807.80 and 106,007,749.20 is: 158,976,821.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,784,190.80 : 431,581,807.80 = 106,007,749.20 : x
  2. Step 2: Convert to fraction form
    287,784,190.80/431,581,807.80 = 106,007,749.20/x
  3. Step 3: Cross multiply
    287,784,190.80x = 431,581,807.80 × 106,007,749.20
  4. Step 4: Simplify right side
    287,784,190.80x = 45,751,016,040,545,008
  5. Step 5: Solve for x
    x = 45,751,016,040,545,008/287,784,190.80
  6. Step 6: Final answer
    x = 158,976,821.88

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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.