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Finding the Fourth Proportional to 84,174.96, 126,266.74 and 79,918.50

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Solution

The fourth proportional to 84,174.96, 126,266.74 and 79,918.50 is: 119,881.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,174.96 : 126,266.74 = 79,918.50 : x
  2. Step 2: Convert to fraction form
    84,174.96/126,266.74 = 79,918.50/x
  3. Step 3: Cross multiply
    84,174.96x = 126,266.74 × 79,918.50
  4. Step 4: Simplify right side
    84,174.96x = 10,091,048,460.69
  5. Step 5: Solve for x
    x = 10,091,048,460.69/84,174.96
  6. Step 6: Final answer
    x = 119,881.83

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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.