Home / 172,701.12-258,983.64-83,928.36

Finding the Fourth Proportional to 172,701.12, 258,983.64 and 83,928.36

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Solution

The fourth proportional to 172,701.12, 258,983.64 and 83,928.36 is: 125,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,701.12 : 258,983.64 = 83,928.36 : x
  2. Step 2: Convert to fraction form
    172,701.12/258,983.64 = 83,928.36/x
  3. Step 3: Cross multiply
    172,701.12x = 258,983.64 × 83,928.36
  4. Step 4: Simplify right side
    172,701.12x = 21,736,072,172.03
  5. Step 5: Solve for x
    x = 21,736,072,172.03/172,701.12
  6. Step 6: Final answer
    x = 125,859.47

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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.