Home / 180,912.96-249,640.56-100,319.04

Finding the Fourth Proportional to 180,912.96, 249,640.56 and 100,319.04

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Solution

The fourth proportional to 180,912.96, 249,640.56 and 100,319.04 is: 138,429.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,912.96 : 249,640.56 = 100,319.04 : x
  2. Step 2: Convert to fraction form
    180,912.96/249,640.56 = 100,319.04/x
  3. Step 3: Cross multiply
    180,912.96x = 249,640.56 × 100,319.04
  4. Step 4: Simplify right side
    180,912.96x = 25,043,701,324.26
  5. Step 5: Solve for x
    x = 25,043,701,324.26/180,912.96
  6. Step 6: Final answer
    x = 138,429.56

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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.