Home / 120,606.08-166,466.67-81,909.39

Finding the Fourth Proportional to 120,606.08, 166,466.67 and 81,909.39

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Solution

The fourth proportional to 120,606.08, 166,466.67 and 81,909.39 is: 113,055.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,606.08 : 166,466.67 = 81,909.39 : x
  2. Step 2: Convert to fraction form
    120,606.08/166,466.67 = 81,909.39/x
  3. Step 3: Cross multiply
    120,606.08x = 166,466.67 × 81,909.39
  4. Step 4: Simplify right side
    120,606.08x = 13,635,183,395.03
  5. Step 5: Solve for x
    x = 13,635,183,395.03/120,606.08
  6. Step 6: Final answer
    x = 113,055.52

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1.5x scale

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.