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Finding the Fourth Proportional to 180,860.56, 249,600.36 and 100,295.80

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Solution

The fourth proportional to 180,860.56, 249,600.36 and 100,295.80 is: 138,415.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,860.56 : 249,600.36 = 100,295.80 : x
  2. Step 2: Convert to fraction form
    180,860.56/249,600.36 = 100,295.80/x
  3. Step 3: Cross multiply
    180,860.56x = 249,600.36 × 100,295.80
  4. Step 4: Simplify right side
    180,860.56x = 25,033,867,786.49
  5. Step 5: Solve for x
    x = 25,033,867,786.49/180,860.56
  6. Step 6: Final answer
    x = 138,415.30

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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.