Home / 127,648.10-176,039.70-79,905.80

Finding the Fourth Proportional to 127,648.10, 176,039.70 and 79,905.80

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Solution

The fourth proportional to 127,648.10, 176,039.70 and 79,905.80 is: 110,198.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,648.10 : 176,039.70 = 79,905.80 : x
  2. Step 2: Convert to fraction form
    127,648.10/176,039.70 = 79,905.80/x
  3. Step 3: Cross multiply
    127,648.10x = 176,039.70 × 79,905.80
  4. Step 4: Simplify right side
    127,648.10x = 14,066,593,060.26
  5. Step 5: Solve for x
    x = 14,066,593,060.26/127,648.10
  6. Step 6: Final answer
    x = 110,198.22

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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.