Home / 120,705.68-166,574.01-66,989.31

Finding the Fourth Proportional to 120,705.68, 166,574.01 and 66,989.31

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Solution

The fourth proportional to 120,705.68, 166,574.01 and 66,989.31 is: 92,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,705.68 : 166,574.01 = 66,989.31 : x
  2. Step 2: Convert to fraction form
    120,705.68/166,574.01 = 66,989.31/x
  3. Step 3: Cross multiply
    120,705.68x = 166,574.01 × 66,989.31
  4. Step 4: Simplify right side
    120,705.68x = 11,158,677,993.83
  5. Step 5: Solve for x
    x = 11,158,677,993.83/120,705.68
  6. Step 6: Final answer
    x = 92,445.35

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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.