Home / 115,929.44-159,988.62-64,939.19

Finding the Fourth Proportional to 115,929.44, 159,988.62 and 64,939.19

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Solution

The fourth proportional to 115,929.44, 159,988.62 and 64,939.19 is: 89,619.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,929.44 : 159,988.62 = 64,939.19 : x
  2. Step 2: Convert to fraction form
    115,929.44/159,988.62 = 64,939.19/x
  3. Step 3: Cross multiply
    115,929.44x = 159,988.62 × 64,939.19
  4. Step 4: Simplify right side
    115,929.44x = 10,389,531,392.02
  5. Step 5: Solve for x
    x = 10,389,531,392.02/115,929.44
  6. Step 6: Final answer
    x = 89,619.44

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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.