Home / 145,629.01-200,980.07-81,110.62

Finding the Fourth Proportional to 145,629.01, 200,980.07 and 81,110.62

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Solution

The fourth proportional to 145,629.01, 200,980.07 and 81,110.62 is: 111,939.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,629.01 : 200,980.07 = 81,110.62 : x
  2. Step 2: Convert to fraction form
    145,629.01/200,980.07 = 81,110.62/x
  3. Step 3: Cross multiply
    145,629.01x = 200,980.07 × 81,110.62
  4. Step 4: Simplify right side
    145,629.01x = 16,301,618,085.34
  5. Step 5: Solve for x
    x = 16,301,618,085.34/145,629.01
  6. Step 6: Final answer
    x = 111,939.36

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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.