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Finding the Fourth Proportional to 139,413.46, 192,392.32 and 75,752.32

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Solution

The fourth proportional to 139,413.46, 192,392.32 and 75,752.32 is: 104,539.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,413.46 : 192,392.32 = 75,752.32 : x
  2. Step 2: Convert to fraction form
    139,413.46/192,392.32 = 75,752.32/x
  3. Step 3: Cross multiply
    139,413.46x = 192,392.32 × 75,752.32
  4. Step 4: Simplify right side
    139,413.46x = 14,574,164,590.18
  5. Step 5: Solve for x
    x = 14,574,164,590.18/139,413.46
  6. Step 6: Final answer
    x = 104,539.15

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1.5x scale

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.