Home / 120,434.12-166,208.46-66,724.10

Finding the Fourth Proportional to 120,434.12, 166,208.46 and 66,724.10

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Solution

The fourth proportional to 120,434.12, 166,208.46 and 66,724.10 is: 92,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,434.12 : 166,208.46 = 66,724.10 : x
  2. Step 2: Convert to fraction form
    120,434.12/166,208.46 = 66,724.10/x
  3. Step 3: Cross multiply
    120,434.12x = 166,208.46 × 66,724.10
  4. Step 4: Simplify right side
    120,434.12x = 11,090,109,905.89
  5. Step 5: Solve for x
    x = 11,090,109,905.89/120,434.12
  6. Step 6: Final answer
    x = 92,084.45

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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.