Home / 128,971.74-193,228.80-53,926.50

Finding the Fourth Proportional to 128,971.74, 193,228.80 and 53,926.50

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Solution

The fourth proportional to 128,971.74, 193,228.80 and 53,926.50 is: 80,794.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,971.74 : 193,228.80 = 53,926.50 : x
  2. Step 2: Convert to fraction form
    128,971.74/193,228.80 = 53,926.50/x
  3. Step 3: Cross multiply
    128,971.74x = 193,228.80 × 53,926.50
  4. Step 4: Simplify right side
    128,971.74x = 10,420,152,883.20
  5. Step 5: Solve for x
    x = 10,420,152,883.20/128,971.74
  6. Step 6: Final answer
    x = 80,794.08

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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.