Home / 190,309.68-262,655.32-109,721.42

Finding the Fourth Proportional to 190,309.68, 262,655.32 and 109,721.42

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Solution

The fourth proportional to 190,309.68, 262,655.32 and 109,721.42 is: 151,431.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,309.68 : 262,655.32 = 109,721.42 : x
  2. Step 2: Convert to fraction form
    190,309.68/262,655.32 = 109,721.42/x
  3. Step 3: Cross multiply
    190,309.68x = 262,655.32 × 109,721.42
  4. Step 4: Simplify right side
    190,309.68x = 28,818,914,680.95
  5. Step 5: Solve for x
    x = 28,818,914,680.95/190,309.68
  6. Step 6: Final answer
    x = 151,431.68

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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.