Home / 180,942.55-249,711.32-100,378.94

Finding the Fourth Proportional to 180,942.55, 249,711.32 and 100,378.94

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Solution

The fourth proportional to 180,942.55, 249,711.32 and 100,378.94 is: 138,528.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,942.55 : 249,711.32 = 100,378.94 : x
  2. Step 2: Convert to fraction form
    180,942.55/249,711.32 = 100,378.94/x
  3. Step 3: Cross multiply
    180,942.55x = 249,711.32 × 100,378.94
  4. Step 4: Simplify right side
    180,942.55x = 25,065,756,609.99
  5. Step 5: Solve for x
    x = 25,065,756,609.99/180,942.55
  6. Step 6: Final answer
    x = 138,528.81

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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.