Home / 127,421.88-175,863.78-73,739.40

Finding the Fourth Proportional to 127,421.88, 175,863.78 and 73,739.40

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Solution

The fourth proportional to 127,421.88, 175,863.78 and 73,739.40 is: 101,772.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,421.88 : 175,863.78 = 73,739.40 : x
  2. Step 2: Convert to fraction form
    127,421.88/175,863.78 = 73,739.40/x
  3. Step 3: Cross multiply
    127,421.88x = 175,863.78 × 73,739.40
  4. Step 4: Simplify right side
    127,421.88x = 12,968,089,618.93
  5. Step 5: Solve for x
    x = 12,968,089,618.93/127,421.88
  6. Step 6: Final answer
    x = 101,772.86

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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.