Home / 190,672.40-263,127.95-105,789.26

Finding the Fourth Proportional to 190,672.40, 263,127.95 and 105,789.26

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Solution

The fourth proportional to 190,672.40, 263,127.95 and 105,789.26 is: 145,989.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,672.40 : 263,127.95 = 105,789.26 : x
  2. Step 2: Convert to fraction form
    190,672.40/263,127.95 = 105,789.26/x
  3. Step 3: Cross multiply
    190,672.40x = 263,127.95 × 105,789.26
  4. Step 4: Simplify right side
    190,672.40x = 27,836,109,271.23
  5. Step 5: Solve for x
    x = 27,836,109,271.23/190,672.40
  6. Step 6: Final answer
    x = 145,989.19

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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.