Home / 128,723.36-193,111.05-44,486.60

Finding the Fourth Proportional to 128,723.36, 193,111.05 and 44,486.60

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Solution

The fourth proportional to 128,723.36, 193,111.05 and 44,486.60 is: 66,738.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,723.36 : 193,111.05 = 44,486.60 : x
  2. Step 2: Convert to fraction form
    128,723.36/193,111.05 = 44,486.60/x
  3. Step 3: Cross multiply
    128,723.36x = 193,111.05 × 44,486.60
  4. Step 4: Simplify right side
    128,723.36x = 8,590,854,036.93
  5. Step 5: Solve for x
    x = 8,590,854,036.93/128,723.36
  6. Step 6: Final answer
    x = 66,738.89

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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.