Home / 105,745.87-145,936.99-60,422.81

Finding the Fourth Proportional to 105,745.87, 145,936.99 and 60,422.81

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Solution

The fourth proportional to 105,745.87, 145,936.99 and 60,422.81 is: 83,387.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,745.87 : 145,936.99 = 60,422.81 : x
  2. Step 2: Convert to fraction form
    105,745.87/145,936.99 = 60,422.81/x
  3. Step 3: Cross multiply
    105,745.87x = 145,936.99 × 60,422.81
  4. Step 4: Simplify right side
    105,745.87x = 8,817,923,018.74
  5. Step 5: Solve for x
    x = 8,817,923,018.74/105,745.87
  6. Step 6: Final answer
    x = 83,387.87

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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.