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Finding the Fourth Proportional to 188,569.68, 260,219.08 and 103,681.68

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Solution

The fourth proportional to 188,569.68, 260,219.08 and 103,681.68 is: 143,076.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,569.68 : 260,219.08 = 103,681.68 : x
  2. Step 2: Convert to fraction form
    188,569.68/260,219.08 = 103,681.68/x
  3. Step 3: Cross multiply
    188,569.68x = 260,219.08 × 103,681.68
  4. Step 4: Simplify right side
    188,569.68x = 26,979,951,382.45
  5. Step 5: Solve for x
    x = 26,979,951,382.45/188,569.68
  6. Step 6: Final answer
    x = 143,076.83

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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.