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Finding the Fourth Proportional to 139,714.86, 192,979.62 and 101,413.20

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Solution

The fourth proportional to 139,714.86, 192,979.62 and 101,413.20 is: 140,075.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,714.86 : 192,979.62 = 101,413.20 : x
  2. Step 2: Convert to fraction form
    139,714.86/192,979.62 = 101,413.20/x
  3. Step 3: Cross multiply
    139,714.86x = 192,979.62 × 101,413.20
  4. Step 4: Simplify right side
    139,714.86x = 19,570,680,798.98
  5. Step 5: Solve for x
    x = 19,570,680,798.98/139,714.86
  6. Step 6: Final answer
    x = 140,075.87

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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.