Home / 84,868.11-127,285.76-80,653.28

Finding the Fourth Proportional to 84,868.11, 127,285.76 and 80,653.28

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Solution

The fourth proportional to 84,868.11, 127,285.76 and 80,653.28 is: 120,964.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,868.11 : 127,285.76 = 80,653.28 : x
  2. Step 2: Convert to fraction form
    84,868.11/127,285.76 = 80,653.28/x
  3. Step 3: Cross multiply
    84,868.11x = 127,285.76 × 80,653.28
  4. Step 4: Simplify right side
    84,868.11x = 10,266,013,606.50
  5. Step 5: Solve for x
    x = 10,266,013,606.50/84,868.11
  6. Step 6: Final answer
    x = 120,964.32

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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.