Home / 131,205.95-181,059-77,508.22

Finding the Fourth Proportional to 131,205.95, 181,059 and 77,508.22

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Solution

The fourth proportional to 131,205.95, 181,059 and 77,508.22 is: 106,958.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,205.95 : 181,059 = 77,508.22 : x
  2. Step 2: Convert to fraction form
    131,205.95/181,059 = 77,508.22/x
  3. Step 3: Cross multiply
    131,205.95x = 181,059 × 77,508.22
  4. Step 4: Simplify right side
    131,205.95x = 14,033,560,804.98
  5. Step 5: Solve for x
    x = 14,033,560,804.98/131,205.95
  6. Step 6: Final answer
    x = 106,958.27

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1.5x scale

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.