Home / 84,929.12-127,409.04-69,272.90

Finding the Fourth Proportional to 84,929.12, 127,409.04 and 69,272.90

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Solution

The fourth proportional to 84,929.12, 127,409.04 and 69,272.90 is: 103,921.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,929.12 : 127,409.04 = 69,272.90 : x
  2. Step 2: Convert to fraction form
    84,929.12/127,409.04 = 69,272.90/x
  3. Step 3: Cross multiply
    84,929.12x = 127,409.04 × 69,272.90
  4. Step 4: Simplify right side
    84,929.12x = 8,825,993,687.02
  5. Step 5: Solve for x
    x = 8,825,993,687.02/84,929.12
  6. Step 6: Final answer
    x = 103,921.88

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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.