Home / 180,964.05-249,730.68-100,391.57

Finding the Fourth Proportional to 180,964.05, 249,730.68 and 100,391.57

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Solution

The fourth proportional to 180,964.05, 249,730.68 and 100,391.57 is: 138,540.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,964.05 : 249,730.68 = 100,391.57 : x
  2. Step 2: Convert to fraction form
    180,964.05/249,730.68 = 100,391.57/x
  3. Step 3: Cross multiply
    180,964.05x = 249,730.68 × 100,391.57
  4. Step 4: Simplify right side
    180,964.05x = 25,070,854,541.97
  5. Step 5: Solve for x
    x = 25,070,854,541.97/180,964.05
  6. Step 6: Final answer
    x = 138,540.53

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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.