Home / 120,555.55-166,365.86-66,840.58

Finding the Fourth Proportional to 120,555.55, 166,365.86 and 66,840.58

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Solution

The fourth proportional to 120,555.55, 166,365.86 and 66,840.58 is: 92,239.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,555.55 : 166,365.86 = 66,840.58 : x
  2. Step 2: Convert to fraction form
    120,555.55/166,365.86 = 66,840.58/x
  3. Step 3: Cross multiply
    120,555.55x = 166,365.86 × 66,840.58
  4. Step 4: Simplify right side
    120,555.55x = 11,119,989,824.48
  5. Step 5: Solve for x
    x = 11,119,989,824.48/120,555.55
  6. Step 6: Final answer
    x = 92,239.55

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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.