Home / 102,745.49-141,878.94-64,571.19

Finding the Fourth Proportional to 102,745.49, 141,878.94 and 64,571.19

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Solution

The fourth proportional to 102,745.49, 141,878.94 and 64,571.19 is: 89,164.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,745.49 : 141,878.94 = 64,571.19 : x
  2. Step 2: Convert to fraction form
    102,745.49/141,878.94 = 64,571.19/x
  3. Step 3: Cross multiply
    102,745.49x = 141,878.94 × 64,571.19
  4. Step 4: Simplify right side
    102,745.49x = 9,161,291,991.74
  5. Step 5: Solve for x
    x = 9,161,291,991.74/102,745.49
  6. Step 6: Final answer
    x = 89,164.91

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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.