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Finding the Fourth Proportional to 139,656.32, 192,722.58 and 75,994.28

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Solution

The fourth proportional to 139,656.32, 192,722.58 and 75,994.28 is: 104,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,656.32 : 192,722.58 = 75,994.28 : x
  2. Step 2: Convert to fraction form
    139,656.32/192,722.58 = 75,994.28/x
  3. Step 3: Cross multiply
    139,656.32x = 192,722.58 × 75,994.28
  4. Step 4: Simplify right side
    139,656.32x = 14,645,813,706.84
  5. Step 5: Solve for x
    x = 14,645,813,706.84/139,656.32
  6. Step 6: Final answer
    x = 104,870.40

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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.