Home / 128,523,413.68-192,791,320.70-42,259,910.56

Finding the Fourth Proportional to 128,523,413.68, 192,791,320.70 and 42,259,910.56

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Solution

The fourth proportional to 128,523,413.68, 192,791,320.70 and 42,259,910.56 is: 63,391,904.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,523,413.68 : 192,791,320.70 = 42,259,910.56 : x
  2. Step 2: Convert to fraction form
    128,523,413.68/192,791,320.70 = 42,259,910.56/x
  3. Step 3: Cross multiply
    128,523,413.68x = 192,791,320.70 × 42,259,910.56
  4. Step 4: Simplify right side
    128,523,413.68x = 8,147,343,968,832,998
  5. Step 5: Solve for x
    x = 8,147,343,968,832,998/128,523,413.68
  6. Step 6: Final answer
    x = 63,391,904.52

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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.