Home / 120,669.60-166,534.08-66,972

Finding the Fourth Proportional to 120,669.60, 166,534.08 and 66,972

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Solution

The fourth proportional to 120,669.60, 166,534.08 and 66,972 is: 92,426.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,669.60 : 166,534.08 = 66,972 : x
  2. Step 2: Convert to fraction form
    120,669.60/166,534.08 = 66,972/x
  3. Step 3: Cross multiply
    120,669.60x = 166,534.08 × 66,972
  4. Step 4: Simplify right side
    120,669.60x = 11,153,120,405.76
  5. Step 5: Solve for x
    x = 11,153,120,405.76/120,669.60
  6. Step 6: Final answer
    x = 92,426.93

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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.