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Finding the Fourth Proportional to 139,333.84, 192,281.25 and 75,672.70

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Solution

The fourth proportional to 139,333.84, 192,281.25 and 75,672.70 is: 104,428.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,333.84 : 192,281.25 = 75,672.70 : x
  2. Step 2: Convert to fraction form
    139,333.84/192,281.25 = 75,672.70/x
  3. Step 3: Cross multiply
    139,333.84x = 192,281.25 × 75,672.70
  4. Step 4: Simplify right side
    139,333.84x = 14,550,441,346.88
  5. Step 5: Solve for x
    x = 14,550,441,346.88/139,333.84
  6. Step 6: Final answer
    x = 104,428.63

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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.