Home / 180,919.05-249,658.11-100,340.79

Finding the Fourth Proportional to 180,919.05, 249,658.11 and 100,340.79

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Solution

The fourth proportional to 180,919.05, 249,658.11 and 100,340.79 is: 138,464.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,919.05 : 249,658.11 = 100,340.79 : x
  2. Step 2: Convert to fraction form
    180,919.05/249,658.11 = 100,340.79/x
  3. Step 3: Cross multiply
    180,919.05x = 249,658.11 × 100,340.79
  4. Step 4: Simplify right side
    180,919.05x = 25,050,891,987.31
  5. Step 5: Solve for x
    x = 25,050,891,987.31/180,919.05
  6. Step 6: Final answer
    x = 138,464.64

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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.