Home / 120,940.02-166,971.96-77,934.69

Finding the Fourth Proportional to 120,940.02, 166,971.96 and 77,934.69

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Solution

The fourth proportional to 120,940.02, 166,971.96 and 77,934.69 is: 107,598.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,940.02 : 166,971.96 = 77,934.69 : x
  2. Step 2: Convert to fraction form
    120,940.02/166,971.96 = 77,934.69/x
  3. Step 3: Cross multiply
    120,940.02x = 166,971.96 × 77,934.69
  4. Step 4: Simplify right side
    120,940.02x = 13,012,907,941.29
  5. Step 5: Solve for x
    x = 13,012,907,941.29/120,940.02
  6. Step 6: Final answer
    x = 107,598.03

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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.