Home / 105,436.73-157,980.13-74,206.37

Finding the Fourth Proportional to 105,436.73, 157,980.13 and 74,206.37

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Solution

The fourth proportional to 105,436.73, 157,980.13 and 74,206.37 is: 111,186.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,436.73 : 157,980.13 = 74,206.37 : x
  2. Step 2: Convert to fraction form
    105,436.73/157,980.13 = 74,206.37/x
  3. Step 3: Cross multiply
    105,436.73x = 157,980.13 × 74,206.37
  4. Step 4: Simplify right side
    105,436.73x = 11,723,131,979.43
  5. Step 5: Solve for x
    x = 11,723,131,979.43/105,436.73
  6. Step 6: Final answer
    x = 111,186.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.