Home / 120,519.83-166,319.03-66,077.12

Finding the Fourth Proportional to 120,519.83, 166,319.03 and 66,077.12

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Solution

The fourth proportional to 120,519.83, 166,319.03 and 66,077.12 is: 91,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,519.83 : 166,319.03 = 66,077.12 : x
  2. Step 2: Convert to fraction form
    120,519.83/166,319.03 = 66,077.12/x
  3. Step 3: Cross multiply
    120,519.83x = 166,319.03 × 66,077.12
  4. Step 4: Simplify right side
    120,519.83x = 10,989,881,837.19
  5. Step 5: Solve for x
    x = 10,989,881,837.19/120,519.83
  6. Step 6: Final answer
    x = 91,187.34

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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.