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Finding the Fourth Proportional to 188,756.80, 260,477.76 and 103,871.68

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Solution

The fourth proportional to 188,756.80, 260,477.76 and 103,871.68 is: 143,339.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,756.80 : 260,477.76 = 103,871.68 : x
  2. Step 2: Convert to fraction form
    188,756.80/260,477.76 = 103,871.68/x
  3. Step 3: Cross multiply
    188,756.80x = 260,477.76 × 103,871.68
  4. Step 4: Simplify right side
    188,756.80x = 27,056,262,533.84
  5. Step 5: Solve for x
    x = 27,056,262,533.84/188,756.80
  6. Step 6: Final answer
    x = 143,339.27

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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.