Home / 81,283.83-121,860.13-74,722.83

Finding the Fourth Proportional to 81,283.83, 121,860.13 and 74,722.83

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Solution

The fourth proportional to 81,283.83, 121,860.13 and 74,722.83 is: 112,023.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,283.83 : 121,860.13 = 74,722.83 : x
  2. Step 2: Convert to fraction form
    81,283.83/121,860.13 = 74,722.83/x
  3. Step 3: Cross multiply
    81,283.83x = 121,860.13 × 74,722.83
  4. Step 4: Simplify right side
    81,283.83x = 9,105,733,777.77
  5. Step 5: Solve for x
    x = 9,105,733,777.77/81,283.83
  6. Step 6: Final answer
    x = 112,023.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.