Home / 120,588.16-166,468.80-80,368.96

Finding the Fourth Proportional to 120,588.16, 166,468.80 and 80,368.96

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Solution

The fourth proportional to 120,588.16, 166,468.80 and 80,368.96 is: 110,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,588.16 : 166,468.80 = 80,368.96 : x
  2. Step 2: Convert to fraction form
    120,588.16/166,468.80 = 80,368.96/x
  3. Step 3: Cross multiply
    120,588.16x = 166,468.80 × 80,368.96
  4. Step 4: Simplify right side
    120,588.16x = 13,378,924,328.45
  5. Step 5: Solve for x
    x = 13,378,924,328.45/120,588.16
  6. Step 6: Final answer
    x = 110,947.25

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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.