Home / 120,591.78-166,417.10-66,881.76

Finding the Fourth Proportional to 120,591.78, 166,417.10 and 66,881.76

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Solution

The fourth proportional to 120,591.78, 166,417.10 and 66,881.76 is: 92,297.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,591.78 : 166,417.10 = 66,881.76 : x
  2. Step 2: Convert to fraction form
    120,591.78/166,417.10 = 66,881.76/x
  3. Step 3: Cross multiply
    120,591.78x = 166,417.10 × 66,881.76
  4. Step 4: Simplify right side
    120,591.78x = 11,130,268,542.10
  5. Step 5: Solve for x
    x = 11,130,268,542.10/120,591.78
  6. Step 6: Final answer
    x = 92,297.07

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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.