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Finding the Fourth Proportional to 180,804.33, 249,509.97 and 100,231.65

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Solution

The fourth proportional to 180,804.33, 249,509.97 and 100,231.65 is: 138,319.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,804.33 : 249,509.97 = 100,231.65 : x
  2. Step 2: Convert to fraction form
    180,804.33/249,509.97 = 100,231.65/x
  3. Step 3: Cross multiply
    180,804.33x = 249,509.97 × 100,231.65
  4. Step 4: Simplify right side
    180,804.33x = 25,008,795,984.55
  5. Step 5: Solve for x
    x = 25,008,795,984.55/180,804.33
  6. Step 6: Final answer
    x = 138,319.67

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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.