Home / 131,898.44-181,993.02-78,159.80

Finding the Fourth Proportional to 131,898.44, 181,993.02 and 78,159.80

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Solution

The fourth proportional to 131,898.44, 181,993.02 and 78,159.80 is: 107,844.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,898.44 : 181,993.02 = 78,159.80 : x
  2. Step 2: Convert to fraction form
    131,898.44/181,993.02 = 78,159.80/x
  3. Step 3: Cross multiply
    131,898.44x = 181,993.02 × 78,159.80
  4. Step 4: Simplify right side
    131,898.44x = 14,224,538,044.60
  5. Step 5: Solve for x
    x = 14,224,538,044.60/131,898.44
  6. Step 6: Final answer
    x = 107,844.63

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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.