Home / 209,544.48-289,177.65-129,018.47

Finding the Fourth Proportional to 209,544.48, 289,177.65 and 129,018.47

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Solution

The fourth proportional to 209,544.48, 289,177.65 and 129,018.47 is: 178,049.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,544.48 : 289,177.65 = 129,018.47 : x
  2. Step 2: Convert to fraction form
    209,544.48/289,177.65 = 129,018.47/x
  3. Step 3: Cross multiply
    209,544.48x = 289,177.65 × 129,018.47
  4. Step 4: Simplify right side
    209,544.48x = 37,309,256,515.31
  5. Step 5: Solve for x
    x = 37,309,256,515.31/209,544.48
  6. Step 6: Final answer
    x = 178,049.34

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1.5x scale

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.