Home / 105,109.13-145,053.68-57,365.54

Finding the Fourth Proportional to 105,109.13, 145,053.68 and 57,365.54

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Solution

The fourth proportional to 105,109.13, 145,053.68 and 57,365.54 is: 79,166.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,109.13 : 145,053.68 = 57,365.54 : x
  2. Step 2: Convert to fraction form
    105,109.13/145,053.68 = 57,365.54/x
  3. Step 3: Cross multiply
    105,109.13x = 145,053.68 × 57,365.54
  4. Step 4: Simplify right side
    105,109.13x = 8,321,081,670.09
  5. Step 5: Solve for x
    x = 8,321,081,670.09/105,109.13
  6. Step 6: Final answer
    x = 79,166.12

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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.