Home / 105,436.23-157,979.38-74,205.87

Finding the Fourth Proportional to 105,436.23, 157,979.38 and 74,205.87

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Solution

The fourth proportional to 105,436.23, 157,979.38 and 74,205.87 is: 111,185.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,436.23 : 157,979.38 = 74,205.87 : x
  2. Step 2: Convert to fraction form
    105,436.23/157,979.38 = 74,205.87/x
  3. Step 3: Cross multiply
    105,436.23x = 157,979.38 × 74,205.87
  4. Step 4: Simplify right side
    105,436.23x = 11,722,997,334.96
  5. Step 5: Solve for x
    x = 11,722,997,334.96/105,436.23
  6. Step 6: Final answer
    x = 111,185.66

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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.