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Finding the Fourth Proportional to 139,759.52, 192,865.64 and 76,096.16

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Solution

The fourth proportional to 139,759.52, 192,865.64 and 76,096.16 is: 105,011.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,759.52 : 192,865.64 = 76,096.16 : x
  2. Step 2: Convert to fraction form
    139,759.52/192,865.64 = 76,096.16/x
  3. Step 3: Cross multiply
    139,759.52x = 192,865.64 × 76,096.16
  4. Step 4: Simplify right side
    139,759.52x = 14,676,334,599.94
  5. Step 5: Solve for x
    x = 14,676,334,599.94/139,759.52
  6. Step 6: Final answer
    x = 105,011.34

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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.