Home / 131,696.39-181,709.37-80,012.45

Finding the Fourth Proportional to 131,696.39, 181,709.37 and 80,012.45

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Solution

The fourth proportional to 131,696.39, 181,709.37 and 80,012.45 is: 110,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,696.39 : 181,709.37 = 80,012.45 : x
  2. Step 2: Convert to fraction form
    131,696.39/181,709.37 = 80,012.45/x
  3. Step 3: Cross multiply
    131,696.39x = 181,709.37 × 80,012.45
  4. Step 4: Simplify right side
    131,696.39x = 14,539,010,973.11
  5. Step 5: Solve for x
    x = 14,539,010,973.11/131,696.39
  6. Step 6: Final answer
    x = 110,397.95

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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.