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Finding the Fourth Proportional to 188,415.45, 260,010.37 and 103,530.69

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Solution

The fourth proportional to 188,415.45, 260,010.37 and 103,530.69 is: 142,870.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,415.45 : 260,010.37 = 103,530.69 : x
  2. Step 2: Convert to fraction form
    188,415.45/260,010.37 = 103,530.69/x
  3. Step 3: Cross multiply
    188,415.45x = 260,010.37 × 103,530.69
  4. Step 4: Simplify right side
    188,415.45x = 26,919,053,142.67
  5. Step 5: Solve for x
    x = 26,919,053,142.67/188,415.45
  6. Step 6: Final answer
    x = 142,870.73

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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.