Home / 130,694.61-180,413.73-88,310.55

Finding the Fourth Proportional to 130,694.61, 180,413.73 and 88,310.55

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Solution

The fourth proportional to 130,694.61, 180,413.73 and 88,310.55 is: 121,905.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,694.61 : 180,413.73 = 88,310.55 : x
  2. Step 2: Convert to fraction form
    130,694.61/180,413.73 = 88,310.55/x
  3. Step 3: Cross multiply
    130,694.61x = 180,413.73 × 88,310.55
  4. Step 4: Simplify right side
    130,694.61x = 15,932,436,400.40
  5. Step 5: Solve for x
    x = 15,932,436,400.40/130,694.61
  6. Step 6: Final answer
    x = 121,905.84

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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.