Home / 147,189.36-203,147.83-86,756.48

Finding the Fourth Proportional to 147,189.36, 203,147.83 and 86,756.48

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Solution

The fourth proportional to 147,189.36, 203,147.83 and 86,756.48 is: 119,739.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,189.36 : 203,147.83 = 86,756.48 : x
  2. Step 2: Convert to fraction form
    147,189.36/203,147.83 = 86,756.48/x
  3. Step 3: Cross multiply
    147,189.36x = 203,147.83 × 86,756.48
  4. Step 4: Simplify right side
    147,189.36x = 17,624,390,504.95
  5. Step 5: Solve for x
    x = 17,624,390,504.95/147,189.36
  6. Step 6: Final answer
    x = 119,739.57

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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.