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Finding the Fourth Proportional to 188,539.49, 260,177.81 and 103,655.89

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Solution

The fourth proportional to 188,539.49, 260,177.81 and 103,655.89 is: 143,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,539.49 : 260,177.81 = 103,655.89 : x
  2. Step 2: Convert to fraction form
    188,539.49/260,177.81 = 103,655.89/x
  3. Step 3: Cross multiply
    188,539.49x = 260,177.81 × 103,655.89
  4. Step 4: Simplify right side
    188,539.49x = 26,968,961,935.52
  5. Step 5: Solve for x
    x = 26,968,961,935.52/188,539.49
  6. Step 6: Final answer
    x = 143,041.45

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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.