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Finding the Fourth Proportional to 139,624.78, 192,676.58 and 75,962.84

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Solution

The fourth proportional to 139,624.78, 192,676.58 and 75,962.84 is: 104,825.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,624.78 : 192,676.58 = 75,962.84 : x
  2. Step 2: Convert to fraction form
    139,624.78/192,676.58 = 75,962.84/x
  3. Step 3: Cross multiply
    139,624.78x = 192,676.58 × 75,962.84
  4. Step 4: Simplify right side
    139,624.78x = 14,636,260,218.29
  5. Step 5: Solve for x
    x = 14,636,260,218.29/139,624.78
  6. Step 6: Final answer
    x = 104,825.66

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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.