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Finding the Fourth Proportional to 139,323.06, 192,264.12 and 75,661.32

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Solution

The fourth proportional to 139,323.06, 192,264.12 and 75,661.32 is: 104,411.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,323.06 : 192,264.12 = 75,661.32 : x
  2. Step 2: Convert to fraction form
    139,323.06/192,264.12 = 75,661.32/x
  3. Step 3: Cross multiply
    139,323.06x = 192,264.12 × 75,661.32
  4. Step 4: Simplify right side
    139,323.06x = 14,546,957,107.84
  5. Step 5: Solve for x
    x = 14,546,957,107.84/139,323.06
  6. Step 6: Final answer
    x = 104,411.70

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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.