Home / 128,446,413.69-177,256,142.02-69,709,064.84

Finding the Fourth Proportional to 128,446,413.69, 177,256,142.02 and 69,709,064.84

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Solution

The fourth proportional to 128,446,413.69, 177,256,142.02 and 69,709,064.84 is: 96,198,558.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,446,413.69 : 177,256,142.02 = 69,709,064.84 : x
  2. Step 2: Convert to fraction form
    128,446,413.69/177,256,142.02 = 69,709,064.84/x
  3. Step 3: Cross multiply
    128,446,413.69x = 177,256,142.02 × 69,709,064.84
  4. Step 4: Simplify right side
    128,446,413.69x = 12,356,359,896,125,600
  5. Step 5: Solve for x
    x = 12,356,359,896,125,600/128,446,413.69
  6. Step 6: Final answer
    x = 96,198,558.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.