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Finding the Fourth Proportional to 188,913.78, 260,699.88 and 104,030.28

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Solution

The fourth proportional to 188,913.78, 260,699.88 and 104,030.28 is: 143,561.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,913.78 : 260,699.88 = 104,030.28 : x
  2. Step 2: Convert to fraction form
    188,913.78/260,699.88 = 104,030.28/x
  3. Step 3: Cross multiply
    188,913.78x = 260,699.88 × 104,030.28
  4. Step 4: Simplify right side
    188,913.78x = 27,120,681,512.37
  5. Step 5: Solve for x
    x = 27,120,681,512.37/188,913.78
  6. Step 6: Final answer
    x = 143,561.16

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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.