Home / 128,782.83-193,172.20-35,288.58

Finding the Fourth Proportional to 128,782.83, 193,172.20 and 35,288.58

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Solution

The fourth proportional to 128,782.83, 193,172.20 and 35,288.58 is: 52,932.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,782.83 : 193,172.20 = 35,288.58 : x
  2. Step 2: Convert to fraction form
    128,782.83/193,172.20 = 35,288.58/x
  3. Step 3: Cross multiply
    128,782.83x = 193,172.20 × 35,288.58
  4. Step 4: Simplify right side
    128,782.83x = 6,816,773,269.65
  5. Step 5: Solve for x
    x = 6,816,773,269.65/128,782.83
  6. Step 6: Final answer
    x = 52,932.31

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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.