Home / 180,942.81-249,711.68-100,379.19

Finding the Fourth Proportional to 180,942.81, 249,711.68 and 100,379.19

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Solution

The fourth proportional to 180,942.81, 249,711.68 and 100,379.19 is: 138,529.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,942.81 : 249,711.68 = 100,379.19 : x
  2. Step 2: Convert to fraction form
    180,942.81/249,711.68 = 100,379.19/x
  3. Step 3: Cross multiply
    180,942.81x = 249,711.68 × 100,379.19
  4. Step 4: Simplify right side
    180,942.81x = 25,065,856,171.94
  5. Step 5: Solve for x
    x = 25,065,856,171.94/180,942.81
  6. Step 6: Final answer
    x = 138,529.16

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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.