Home / 190,308.81-262,634.70-105,420.41

Finding the Fourth Proportional to 190,308.81, 262,634.70 and 105,420.41

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Solution

The fourth proportional to 190,308.81, 262,634.70 and 105,420.41 is: 145,484.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,308.81 : 262,634.70 = 105,420.41 : x
  2. Step 2: Convert to fraction form
    190,308.81/262,634.70 = 105,420.41/x
  3. Step 3: Cross multiply
    190,308.81x = 262,634.70 × 105,420.41
  4. Step 4: Simplify right side
    190,308.81x = 27,687,055,913.95
  5. Step 5: Solve for x
    x = 27,687,055,913.95/190,308.81
  6. Step 6: Final answer
    x = 145,484.89

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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.