Home / 180,739.80-249,420.92-100,179.44

Finding the Fourth Proportional to 180,739.80, 249,420.92 and 100,179.44

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Solution

The fourth proportional to 180,739.80, 249,420.92 and 100,179.44 is: 138,247.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,739.80 : 249,420.92 = 100,179.44 : x
  2. Step 2: Convert to fraction form
    180,739.80/249,420.92 = 100,179.44/x
  3. Step 3: Cross multiply
    180,739.80x = 249,420.92 × 100,179.44
  4. Step 4: Simplify right side
    180,739.80x = 24,986,848,089.88
  5. Step 5: Solve for x
    x = 24,986,848,089.88/180,739.80
  6. Step 6: Final answer
    x = 138,247.62

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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.