Home / 231,413.81-319,319.15-129,434.00

Finding the Fourth Proportional to 231,413.81, 319,319.15 and 129,434.00

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Solution

The fourth proportional to 231,413.81, 319,319.15 and 129,434.00 is: 178,601.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,413.81 : 319,319.15 = 129,434.00 : x
  2. Step 2: Convert to fraction form
    231,413.81/319,319.15 = 129,434.00/x
  3. Step 3: Cross multiply
    231,413.81x = 319,319.15 × 129,434.00
  4. Step 4: Simplify right side
    231,413.81x = 41,330,752,617.33
  5. Step 5: Solve for x
    x = 41,330,752,617.33/231,413.81
  6. Step 6: Final answer
    x = 178,601.07

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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.