Home / 105,112.54-145,055.74-57,366.90

Finding the Fourth Proportional to 105,112.54, 145,055.74 and 57,366.90

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Solution

The fourth proportional to 105,112.54, 145,055.74 and 57,366.90 is: 79,166.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,112.54 : 145,055.74 = 57,366.90 : x
  2. Step 2: Convert to fraction form
    105,112.54/145,055.74 = 57,366.90/x
  3. Step 3: Cross multiply
    105,112.54x = 145,055.74 × 57,366.90
  4. Step 4: Simplify right side
    105,112.54x = 8,321,398,131.01
  5. Step 5: Solve for x
    x = 8,321,398,131.01/105,112.54
  6. Step 6: Final answer
    x = 79,166.56

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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.