Home / 128,758.07-193,222.82-52,918.81

Finding the Fourth Proportional to 128,758.07, 193,222.82 and 52,918.81

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Solution

The fourth proportional to 128,758.07, 193,222.82 and 52,918.81 is: 79,413.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,758.07 : 193,222.82 = 52,918.81 : x
  2. Step 2: Convert to fraction form
    128,758.07/193,222.82 = 52,918.81/x
  3. Step 3: Cross multiply
    128,758.07x = 193,222.82 × 52,918.81
  4. Step 4: Simplify right side
    128,758.07x = 10,225,121,348.48
  5. Step 5: Solve for x
    x = 10,225,121,348.48/128,758.07
  6. Step 6: Final answer
    x = 79,413.44

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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.