Home / 120,395.36-166,145.50-66,680.31

Finding the Fourth Proportional to 120,395.36, 166,145.50 and 66,680.31

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Solution

The fourth proportional to 120,395.36, 166,145.50 and 66,680.31 is: 92,018.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,395.36 : 166,145.50 = 66,680.31 : x
  2. Step 2: Convert to fraction form
    120,395.36/166,145.50 = 66,680.31/x
  3. Step 3: Cross multiply
    120,395.36x = 166,145.50 × 66,680.31
  4. Step 4: Simplify right side
    120,395.36x = 11,078,633,445.11
  5. Step 5: Solve for x
    x = 11,078,633,445.11/120,395.36
  6. Step 6: Final answer
    x = 92,018.77

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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.