Home / 120,587.13-166,399.11-66,871.17

Finding the Fourth Proportional to 120,587.13, 166,399.11 and 66,871.17

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Solution

The fourth proportional to 120,587.13, 166,399.11 and 66,871.17 is: 92,276.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,587.13 : 166,399.11 = 66,871.17 : x
  2. Step 2: Convert to fraction form
    120,587.13/166,399.11 = 66,871.17/x
  3. Step 3: Cross multiply
    120,587.13x = 166,399.11 × 66,871.17
  4. Step 4: Simplify right side
    120,587.13x = 11,127,303,172.66
  5. Step 5: Solve for x
    x = 11,127,303,172.66/120,587.13
  6. Step 6: Final answer
    x = 92,276.04

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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.