Home / 84,140.21-126,206.79-34,218.38

Finding the Fourth Proportional to 84,140.21, 126,206.79 and 34,218.38

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Solution

The fourth proportional to 84,140.21, 126,206.79 and 34,218.38 is: 51,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,140.21 : 126,206.79 = 34,218.38 : x
  2. Step 2: Convert to fraction form
    84,140.21/126,206.79 = 34,218.38/x
  3. Step 3: Cross multiply
    84,140.21x = 126,206.79 × 34,218.38
  4. Step 4: Simplify right side
    84,140.21x = 4,318,591,267.77
  5. Step 5: Solve for x
    x = 4,318,591,267.77/84,140.21
  6. Step 6: Final answer
    x = 51,326.13

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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.