Home / 120,821.84-181,263.51-85,352.46

Finding the Fourth Proportional to 120,821.84, 181,263.51 and 85,352.46

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Solution

The fourth proportional to 120,821.84, 181,263.51 and 85,352.46 is: 128,050.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,821.84 : 181,263.51 = 85,352.46 : x
  2. Step 2: Convert to fraction form
    120,821.84/181,263.51 = 85,352.46/x
  3. Step 3: Cross multiply
    120,821.84x = 181,263.51 × 85,352.46
  4. Step 4: Simplify right side
    120,821.84x = 15,471,286,736.89
  5. Step 5: Solve for x
    x = 15,471,286,736.89/120,821.84
  6. Step 6: Final answer
    x = 128,050.41

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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.