Home / 190,308.68-262,634.52-105,420.28

Finding the Fourth Proportional to 190,308.68, 262,634.52 and 105,420.28

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Solution

The fourth proportional to 190,308.68, 262,634.52 and 105,420.28 is: 145,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,308.68 : 262,634.52 = 105,420.28 : x
  2. Step 2: Convert to fraction form
    190,308.68/262,634.52 = 105,420.28/x
  3. Step 3: Cross multiply
    190,308.68x = 262,634.52 × 105,420.28
  4. Step 4: Simplify right side
    190,308.68x = 27,687,004,374.81
  5. Step 5: Solve for x
    x = 27,687,004,374.81/190,308.68
  6. Step 6: Final answer
    x = 145,484.71

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1.5x scale

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.