Home / 128,973.74-193,231.80-53,928.50

Finding the Fourth Proportional to 128,973.74, 193,231.80 and 53,928.50

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Solution

The fourth proportional to 128,973.74, 193,231.80 and 53,928.50 is: 80,797.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,973.74 : 193,231.80 = 53,928.50 : x
  2. Step 2: Convert to fraction form
    128,973.74/193,231.80 = 53,928.50/x
  3. Step 3: Cross multiply
    128,973.74x = 193,231.80 × 53,928.50
  4. Step 4: Simplify right side
    128,973.74x = 10,420,701,126.30
  5. Step 5: Solve for x
    x = 10,420,701,126.30/128,973.74
  6. Step 6: Final answer
    x = 80,797.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.