Home / 188,819.10-260,548.98-111,289.68

Finding the Fourth Proportional to 188,819.10, 260,548.98 and 111,289.68

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Solution

The fourth proportional to 188,819.10, 260,548.98 and 111,289.68 is: 153,567.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,819.10 : 260,548.98 = 111,289.68 : x
  2. Step 2: Convert to fraction form
    188,819.10/260,548.98 = 111,289.68/x
  3. Step 3: Cross multiply
    188,819.10x = 260,548.98 × 111,289.68
  4. Step 4: Simplify right side
    188,819.10x = 28,996,412,608.53
  5. Step 5: Solve for x
    x = 28,996,412,608.53/188,819.10
  6. Step 6: Final answer
    x = 153,567.16

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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.