Home / 105,111.11-145,053.84-57,365.48

Finding the Fourth Proportional to 105,111.11, 145,053.84 and 57,365.48

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Solution

The fourth proportional to 105,111.11, 145,053.84 and 57,365.48 is: 79,164.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,111.11 : 145,053.84 = 57,365.48 : x
  2. Step 2: Convert to fraction form
    105,111.11/145,053.84 = 57,365.48/x
  3. Step 3: Cross multiply
    105,111.11x = 145,053.84 × 57,365.48
  4. Step 4: Simplify right side
    105,111.11x = 8,321,083,157.44
  5. Step 5: Solve for x
    x = 8,321,083,157.44/105,111.11
  6. Step 6: Final answer
    x = 79,164.64

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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.