Home / 180,945.89-249,735.26-100,399.35

Finding the Fourth Proportional to 180,945.89, 249,735.26 and 100,399.35

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Solution

The fourth proportional to 180,945.89, 249,735.26 and 100,399.35 is: 138,567.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,945.89 : 249,735.26 = 100,399.35 : x
  2. Step 2: Convert to fraction form
    180,945.89/249,735.26 = 100,399.35/x
  3. Step 3: Cross multiply
    180,945.89x = 249,735.26 × 100,399.35
  4. Step 4: Simplify right side
    180,945.89x = 25,073,257,274.08
  5. Step 5: Solve for x
    x = 25,073,257,274.08/180,945.89
  6. Step 6: Final answer
    x = 138,567.71

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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.