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Finding the Fourth Proportional to 188,693.60, 260,387.76 and 103,808.48

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Solution

The fourth proportional to 188,693.60, 260,387.76 and 103,808.48 is: 143,250.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,693.60 : 260,387.76 = 103,808.48 : x
  2. Step 2: Convert to fraction form
    188,693.60/260,387.76 = 103,808.48/x
  3. Step 3: Cross multiply
    188,693.60x = 260,387.76 × 103,808.48
  4. Step 4: Simplify right side
    188,693.60x = 27,030,457,576.20
  5. Step 5: Solve for x
    x = 27,030,457,576.20/188,693.60
  6. Step 6: Final answer
    x = 143,250.53

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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.