Home / 84,171-126,071.10-69,579.66

Finding the Fourth Proportional to 84,171, 126,071.10 and 69,579.66

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Solution

The fourth proportional to 84,171, 126,071.10 and 69,579.66 is: 104,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,171 : 126,071.10 = 69,579.66 : x
  2. Step 2: Convert to fraction form
    84,171/126,071.10 = 69,579.66/x
  3. Step 3: Cross multiply
    84,171x = 126,071.10 × 69,579.66
  4. Step 4: Simplify right side
    84,171x = 8,771,984,273.83
  5. Step 5: Solve for x
    x = 8,771,984,273.83/84,171
  6. Step 6: Final answer
    x = 104,216.23

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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.