Home / 120,890.71-166,850.45-69,895.34

Finding the Fourth Proportional to 120,890.71, 166,850.45 and 69,895.34

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Solution

The fourth proportional to 120,890.71, 166,850.45 and 69,895.34 is: 96,467.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,890.71 : 166,850.45 = 69,895.34 : x
  2. Step 2: Convert to fraction form
    120,890.71/166,850.45 = 69,895.34/x
  3. Step 3: Cross multiply
    120,890.71x = 166,850.45 × 69,895.34
  4. Step 4: Simplify right side
    120,890.71x = 11,662,068,635.97
  5. Step 5: Solve for x
    x = 11,662,068,635.97/120,890.71
  6. Step 6: Final answer
    x = 96,467.86

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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.