Home / 111,263.50-166,284.40-81,340.73

Finding the Fourth Proportional to 111,263.50, 166,284.40 and 81,340.73

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Solution

The fourth proportional to 111,263.50, 166,284.40 and 81,340.73 is: 121,564.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,263.50 : 166,284.40 = 81,340.73 : x
  2. Step 2: Convert to fraction form
    111,263.50/166,284.40 = 81,340.73/x
  3. Step 3: Cross multiply
    111,263.50x = 166,284.40 × 81,340.73
  4. Step 4: Simplify right side
    111,263.50x = 13,525,694,483.61
  5. Step 5: Solve for x
    x = 13,525,694,483.61/111,263.50
  6. Step 6: Final answer
    x = 121,564.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.