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Finding the Fourth Proportional to 188,206.40, 259,709.40 and 103,320.56

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Solution

The fourth proportional to 188,206.40, 259,709.40 and 103,320.56 is: 142,573.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,206.40 : 259,709.40 = 103,320.56 : x
  2. Step 2: Convert to fraction form
    188,206.40/259,709.40 = 103,320.56/x
  3. Step 3: Cross multiply
    188,206.40x = 259,709.40 × 103,320.56
  4. Step 4: Simplify right side
    188,206.40x = 26,833,320,645.26
  5. Step 5: Solve for x
    x = 26,833,320,645.26/188,206.40
  6. Step 6: Final answer
    x = 142,573.90

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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.