Home / 105,361.83-145,399.32-57,615.21

Finding the Fourth Proportional to 105,361.83, 145,399.32 and 57,615.21

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Solution

The fourth proportional to 105,361.83, 145,399.32 and 57,615.21 is: 79,508.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,361.83 : 145,399.32 = 57,615.21 : x
  2. Step 2: Convert to fraction form
    105,361.83/145,399.32 = 57,615.21/x
  3. Step 3: Cross multiply
    105,361.83x = 145,399.32 × 57,615.21
  4. Step 4: Simplify right side
    105,361.83x = 8,377,212,355.66
  5. Step 5: Solve for x
    x = 8,377,212,355.66/105,361.83
  6. Step 6: Final answer
    x = 79,508.99

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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.