Home / 82,816.20-124,224.30-69,985.80

Finding the Fourth Proportional to 82,816.20, 124,224.30 and 69,985.80

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Solution

The fourth proportional to 82,816.20, 124,224.30 and 69,985.80 is: 104,978.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,816.20 : 124,224.30 = 69,985.80 : x
  2. Step 2: Convert to fraction form
    82,816.20/124,224.30 = 69,985.80/x
  3. Step 3: Cross multiply
    82,816.20x = 124,224.30 × 69,985.80
  4. Step 4: Simplify right side
    82,816.20x = 8,693,937,014.94
  5. Step 5: Solve for x
    x = 8,693,937,014.94/82,816.20
  6. Step 6: Final answer
    x = 104,978.70

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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.