Home / 120,429.12-166,201.56-66,719.10

Finding the Fourth Proportional to 120,429.12, 166,201.56 and 66,719.10

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Solution

The fourth proportional to 120,429.12, 166,201.56 and 66,719.10 is: 92,077.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,429.12 : 166,201.56 = 66,719.10 : x
  2. Step 2: Convert to fraction form
    120,429.12/166,201.56 = 66,719.10/x
  3. Step 3: Cross multiply
    120,429.12x = 166,201.56 × 66,719.10
  4. Step 4: Simplify right side
    120,429.12x = 11,088,818,501.80
  5. Step 5: Solve for x
    x = 11,088,818,501.80/120,429.12
  6. Step 6: Final answer
    x = 92,077.55

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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.