Home / 128,782.98-193,173.57-40,036.35

Finding the Fourth Proportional to 128,782.98, 193,173.57 and 40,036.35

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Solution

The fourth proportional to 128,782.98, 193,173.57 and 40,036.35 is: 60,054.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,782.98 : 193,173.57 = 40,036.35 : x
  2. Step 2: Convert to fraction form
    128,782.98/193,173.57 = 40,036.35/x
  3. Step 3: Cross multiply
    128,782.98x = 193,173.57 × 40,036.35
  4. Step 4: Simplify right side
    128,782.98x = 7,733,964,659.27
  5. Step 5: Solve for x
    x = 7,733,964,659.27/128,782.98
  6. Step 6: Final answer
    x = 60,054.25

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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.