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Finding the Fourth Proportional to 188,507.10, 260,133.19 and 103,623.56

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Solution

The fourth proportional to 188,507.10, 260,133.19 and 103,623.56 is: 142,996.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,507.10 : 260,133.19 = 103,623.56 : x
  2. Step 2: Convert to fraction form
    188,507.10/260,133.19 = 103,623.56/x
  3. Step 3: Cross multiply
    188,507.10x = 260,133.19 × 103,623.56
  4. Step 4: Simplify right side
    188,507.10x = 26,955,927,221.96
  5. Step 5: Solve for x
    x = 26,955,927,221.96/188,507.10
  6. Step 6: Final answer
    x = 142,996.88

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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.