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Finding the Fourth Proportional to 119,367.95, 179,413.66 and 78,979.22

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Solution

The fourth proportional to 119,367.95, 179,413.66 and 78,979.22 is: 118,708.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,367.95 : 179,413.66 = 78,979.22 : x
  2. Step 2: Convert to fraction form
    119,367.95/179,413.66 = 78,979.22/x
  3. Step 3: Cross multiply
    119,367.95x = 179,413.66 × 78,979.22
  4. Step 4: Simplify right side
    119,367.95x = 14,169,949,829.63
  5. Step 5: Solve for x
    x = 14,169,949,829.63/119,367.95
  6. Step 6: Final answer
    x = 118,708.17

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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.