Home / 120,759.76-181,145.40-64,576.72

Finding the Fourth Proportional to 120,759.76, 181,145.40 and 64,576.72

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Solution

The fourth proportional to 120,759.76, 181,145.40 and 64,576.72 is: 96,868.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,759.76 : 181,145.40 = 64,576.72 : x
  2. Step 2: Convert to fraction form
    120,759.76/181,145.40 = 64,576.72/x
  3. Step 3: Cross multiply
    120,759.76x = 181,145.40 × 64,576.72
  4. Step 4: Simplify right side
    120,759.76x = 11,697,775,775.09
  5. Step 5: Solve for x
    x = 11,697,775,775.09/120,759.76
  6. Step 6: Final answer
    x = 96,868.16

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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.