Home / 120,884.30-166,820.28-66,436.10

Finding the Fourth Proportional to 120,884.30, 166,820.28 and 66,436.10

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Solution

The fourth proportional to 120,884.30, 166,820.28 and 66,436.10 is: 91,681.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,884.30 : 166,820.28 = 66,436.10 : x
  2. Step 2: Convert to fraction form
    120,884.30/166,820.28 = 66,436.10/x
  3. Step 3: Cross multiply
    120,884.30x = 166,820.28 × 66,436.10
  4. Step 4: Simplify right side
    120,884.30x = 11,082,888,804.11
  5. Step 5: Solve for x
    x = 11,082,888,804.11/120,884.30
  6. Step 6: Final answer
    x = 91,681.79

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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.