Home / 103,431.36-155,143.94-28,556.08

Finding the Fourth Proportional to 103,431.36, 155,143.94 and 28,556.08

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Solution

The fourth proportional to 103,431.36, 155,143.94 and 28,556.08 is: 42,833.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431.36 : 155,143.94 = 28,556.08 : x
  2. Step 2: Convert to fraction form
    103,431.36/155,143.94 = 28,556.08/x
  3. Step 3: Cross multiply
    103,431.36x = 155,143.94 × 28,556.08
  4. Step 4: Simplify right side
    103,431.36x = 4,430,302,762.16
  5. Step 5: Solve for x
    x = 4,430,302,762.16/103,431.36
  6. Step 6: Final answer
    x = 42,833.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.