Home / 105,104.99-145,047.96-57,361.41

Finding the Fourth Proportional to 105,104.99, 145,047.96 and 57,361.41

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Solution

The fourth proportional to 105,104.99, 145,047.96 and 57,361.41 is: 79,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,104.99 : 145,047.96 = 57,361.41 : x
  2. Step 2: Convert to fraction form
    105,104.99/145,047.96 = 57,361.41/x
  3. Step 3: Cross multiply
    105,104.99x = 145,047.96 × 57,361.41
  4. Step 4: Simplify right side
    105,104.99x = 8,320,155,503.22
  5. Step 5: Solve for x
    x = 8,320,155,503.22/105,104.99
  6. Step 6: Final answer
    x = 79,160.43

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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.