Home / 149,009.45-205,631.93-81,026.47

Finding the Fourth Proportional to 149,009.45, 205,631.93 and 81,026.47

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Solution

The fourth proportional to 149,009.45, 205,631.93 and 81,026.47 is: 111,815.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,009.45 : 205,631.93 = 81,026.47 : x
  2. Step 2: Convert to fraction form
    149,009.45/205,631.93 = 81,026.47/x
  3. Step 3: Cross multiply
    149,009.45x = 205,631.93 × 81,026.47
  4. Step 4: Simplify right side
    149,009.45x = 16,661,629,002.05
  5. Step 5: Solve for x
    x = 16,661,629,002.05/149,009.45
  6. Step 6: Final answer
    x = 111,815.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.