Home / 120,686.46-166,555.12-66,971.60

Finding the Fourth Proportional to 120,686.46, 166,555.12 and 66,971.60

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Solution

The fourth proportional to 120,686.46, 166,555.12 and 66,971.60 is: 92,425.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,686.46 : 166,555.12 = 66,971.60 : x
  2. Step 2: Convert to fraction form
    120,686.46/166,555.12 = 66,971.60/x
  3. Step 3: Cross multiply
    120,686.46x = 166,555.12 × 66,971.60
  4. Step 4: Simplify right side
    120,686.46x = 11,154,462,874.59
  5. Step 5: Solve for x
    x = 11,154,462,874.59/120,686.46
  6. Step 6: Final answer
    x = 92,425.14

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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.