Home / 120,656.36-166,498.26-72,881.48

Finding the Fourth Proportional to 120,656.36, 166,498.26 and 72,881.48

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Solution

The fourth proportional to 120,656.36, 166,498.26 and 72,881.48 is: 100,571.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,656.36 : 166,498.26 = 72,881.48 : x
  2. Step 2: Convert to fraction form
    120,656.36/166,498.26 = 72,881.48/x
  3. Step 3: Cross multiply
    120,656.36x = 166,498.26 × 72,881.48
  4. Step 4: Simplify right side
    120,656.36x = 12,134,639,606.22
  5. Step 5: Solve for x
    x = 12,134,639,606.22/120,656.36
  6. Step 6: Final answer
    x = 100,571.90

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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.