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Finding the Fourth Proportional to 188,437.82, 260,085.20 and 115,903.05

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Solution

The fourth proportional to 188,437.82, 260,085.20 and 115,903.05 is: 159,971.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,437.82 : 260,085.20 = 115,903.05 : x
  2. Step 2: Convert to fraction form
    188,437.82/260,085.20 = 115,903.05/x
  3. Step 3: Cross multiply
    188,437.82x = 260,085.20 × 115,903.05
  4. Step 4: Simplify right side
    188,437.82x = 30,144,668,229.62
  5. Step 5: Solve for x
    x = 30,144,668,229.62/188,437.82
  6. Step 6: Final answer
    x = 159,971.43

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1.5x scale

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.