Home / 172,075.18-258,276.95-105,645.06

Finding the Fourth Proportional to 172,075.18, 258,276.95 and 105,645.06

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Solution

The fourth proportional to 172,075.18, 258,276.95 and 105,645.06 is: 158,568.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,075.18 : 258,276.95 = 105,645.06 : x
  2. Step 2: Convert to fraction form
    172,075.18/258,276.95 = 105,645.06/x
  3. Step 3: Cross multiply
    172,075.18x = 258,276.95 × 105,645.06
  4. Step 4: Simplify right side
    172,075.18x = 27,285,683,879.37
  5. Step 5: Solve for x
    x = 27,285,683,879.37/172,075.18
  6. Step 6: Final answer
    x = 158,568.39

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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.