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Finding the Fourth Proportional to 188,109.12, 282,212.28 and 69,814.20

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Solution

The fourth proportional to 188,109.12, 282,212.28 and 69,814.20 is: 104,739.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,109.12 : 282,212.28 = 69,814.20 : x
  2. Step 2: Convert to fraction form
    188,109.12/282,212.28 = 69,814.20/x
  3. Step 3: Cross multiply
    188,109.12x = 282,212.28 × 69,814.20
  4. Step 4: Simplify right side
    188,109.12x = 19,702,424,558.38
  5. Step 5: Solve for x
    x = 19,702,424,558.38/188,109.12
  6. Step 6: Final answer
    x = 104,739.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.