Home / 120,984.48-166,980.60-69,990.12

Finding the Fourth Proportional to 120,984.48, 166,980.60 and 69,990.12

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Solution

The fourth proportional to 120,984.48, 166,980.60 and 69,990.12 is: 96,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,984.48 : 166,980.60 = 69,990.12 : x
  2. Step 2: Convert to fraction form
    120,984.48/166,980.60 = 69,990.12/x
  3. Step 3: Cross multiply
    120,984.48x = 166,980.60 × 69,990.12
  4. Step 4: Simplify right side
    120,984.48x = 11,686,992,231.67
  5. Step 5: Solve for x
    x = 11,686,992,231.67/120,984.48
  6. Step 6: Final answer
    x = 96,599.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.