Home / 120,435.83-166,196.72-66,721.70

Finding the Fourth Proportional to 120,435.83, 166,196.72 and 66,721.70

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Solution

The fourth proportional to 120,435.83, 166,196.72 and 66,721.70 is: 92,073.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,435.83 : 166,196.72 = 66,721.70 : x
  2. Step 2: Convert to fraction form
    120,435.83/166,196.72 = 66,721.70/x
  3. Step 3: Cross multiply
    120,435.83x = 166,196.72 × 66,721.70
  4. Step 4: Simplify right side
    120,435.83x = 11,088,927,028.64
  5. Step 5: Solve for x
    x = 11,088,927,028.64/120,435.83
  6. Step 6: Final answer
    x = 92,073.32

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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.