Home / 215,918.93-297,968.56-120,431.81

Finding the Fourth Proportional to 215,918.93, 297,968.56 and 120,431.81

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Solution

The fourth proportional to 215,918.93, 297,968.56 and 120,431.81 is: 166,196.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,918.93 : 297,968.56 = 120,431.81 : x
  2. Step 2: Convert to fraction form
    215,918.93/297,968.56 = 120,431.81/x
  3. Step 3: Cross multiply
    215,918.93x = 297,968.56 × 120,431.81
  4. Step 4: Simplify right side
    215,918.93x = 35,884,893,447.74
  5. Step 5: Solve for x
    x = 35,884,893,447.74/215,918.93
  6. Step 6: Final answer
    x = 166,196.14

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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.