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Finding the Fourth Proportional to 188,809.45, 260,561.14 and 103,926.51

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Solution

The fourth proportional to 188,809.45, 260,561.14 and 103,926.51 is: 143,420.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,809.45 : 260,561.14 = 103,926.51 : x
  2. Step 2: Convert to fraction form
    188,809.45/260,561.14 = 103,926.51/x
  3. Step 3: Cross multiply
    188,809.45x = 260,561.14 × 103,926.51
  4. Step 4: Simplify right side
    188,809.45x = 27,079,209,662.01
  5. Step 5: Solve for x
    x = 27,079,209,662.01/188,809.45
  6. Step 6: Final answer
    x = 143,420.84

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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.