Home / 100,365.13-138,505.44-55,047.25

Finding the Fourth Proportional to 100,365.13, 138,505.44 and 55,047.25

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Solution

The fourth proportional to 100,365.13, 138,505.44 and 55,047.25 is: 75,966.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,365.13 : 138,505.44 = 55,047.25 : x
  2. Step 2: Convert to fraction form
    100,365.13/138,505.44 = 55,047.25/x
  3. Step 3: Cross multiply
    100,365.13x = 138,505.44 × 55,047.25
  4. Step 4: Simplify right side
    100,365.13x = 7,624,343,582.04
  5. Step 5: Solve for x
    x = 7,624,343,582.04/100,365.13
  6. Step 6: Final answer
    x = 75,966.06

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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.