Home / 84,828.20-127,242.30-80,940.20

Finding the Fourth Proportional to 84,828.20, 127,242.30 and 80,940.20

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Solution

The fourth proportional to 84,828.20, 127,242.30 and 80,940.20 is: 121,410.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,828.20 : 127,242.30 = 80,940.20 : x
  2. Step 2: Convert to fraction form
    84,828.20/127,242.30 = 80,940.20/x
  3. Step 3: Cross multiply
    84,828.20x = 127,242.30 × 80,940.20
  4. Step 4: Simplify right side
    84,828.20x = 10,299,017,210.46
  5. Step 5: Solve for x
    x = 10,299,017,210.46/84,828.20
  6. Step 6: Final answer
    x = 121,410.30

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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.