Home / 209,975.19-289,771.27-129,455.92

Finding the Fourth Proportional to 209,975.19, 289,771.27 and 129,455.92

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Solution

The fourth proportional to 209,975.19, 289,771.27 and 129,455.92 is: 178,652.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,975.19 : 289,771.27 = 129,455.92 : x
  2. Step 2: Convert to fraction form
    209,975.19/289,771.27 = 129,455.92/x
  3. Step 3: Cross multiply
    209,975.19x = 289,771.27 × 129,455.92
  4. Step 4: Simplify right side
    209,975.19x = 37,512,607,114.18
  5. Step 5: Solve for x
    x = 37,512,607,114.18/209,975.19
  6. Step 6: Final answer
    x = 178,652.57

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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.