Home / 82,408.14-123,612.16-78,200.89

Finding the Fourth Proportional to 82,408.14, 123,612.16 and 78,200.89

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Solution

The fourth proportional to 82,408.14, 123,612.16 and 78,200.89 is: 117,301.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,408.14 : 123,612.16 = 78,200.89 : x
  2. Step 2: Convert to fraction form
    82,408.14/123,612.16 = 78,200.89/x
  3. Step 3: Cross multiply
    82,408.14x = 123,612.16 × 78,200.89
  4. Step 4: Simplify right side
    82,408.14x = 9,666,580,926.82
  5. Step 5: Solve for x
    x = 9,666,580,926.82/82,408.14
  6. Step 6: Final answer
    x = 117,301.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.