Home / 209,475.26-314,172.33-81,391.32

Finding the Fourth Proportional to 209,475.26, 314,172.33 and 81,391.32

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Solution

The fourth proportional to 209,475.26, 314,172.33 and 81,391.32 is: 122,071.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,475.26 : 314,172.33 = 81,391.32 : x
  2. Step 2: Convert to fraction form
    209,475.26/314,172.33 = 81,391.32/x
  3. Step 3: Cross multiply
    209,475.26x = 314,172.33 × 81,391.32
  4. Step 4: Simplify right side
    209,475.26x = 25,570,900,646.18
  5. Step 5: Solve for x
    x = 25,570,900,646.18/209,475.26
  6. Step 6: Final answer
    x = 122,071.22

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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.