Home / 127,638.27-176,137.88-79,917.93

Finding the Fourth Proportional to 127,638.27, 176,137.88 and 79,917.93

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Solution

The fourth proportional to 127,638.27, 176,137.88 and 79,917.93 is: 110,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,638.27 : 176,137.88 = 79,917.93 : x
  2. Step 2: Convert to fraction form
    127,638.27/176,137.88 = 79,917.93/x
  3. Step 3: Cross multiply
    127,638.27x = 176,137.88 × 79,917.93
  4. Step 4: Simplify right side
    127,638.27x = 14,076,574,364.60
  5. Step 5: Solve for x
    x = 14,076,574,364.60/127,638.27
  6. Step 6: Final answer
    x = 110,284.90

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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.