Home / 123,489,309.15-184,986,999.45-74,277,990.78

Finding the Fourth Proportional to 123,489,309.15, 184,986,999.45 and 74,277,990.78

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Solution

The fourth proportional to 123,489,309.15, 184,986,999.45 and 74,277,990.78 is: 111,268,438.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,489,309.15 : 184,986,999.45 = 74,277,990.78 : x
  2. Step 2: Convert to fraction form
    123,489,309.15/184,986,999.45 = 74,277,990.78/x
  3. Step 3: Cross multiply
    123,489,309.15x = 184,986,999.45 × 74,277,990.78
  4. Step 4: Simplify right side
    123,489,309.15x = 13,740,462,639,566,964
  5. Step 5: Solve for x
    x = 13,740,462,639,566,964/123,489,309.15
  6. Step 6: Final answer
    x = 111,268,438.82

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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.