Home / 120,474.36-180,707.09-57,339.72

Finding the Fourth Proportional to 120,474.36, 180,707.09 and 57,339.72

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Solution

The fourth proportional to 120,474.36, 180,707.09 and 57,339.72 is: 86,007.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,474.36 : 180,707.09 = 57,339.72 : x
  2. Step 2: Convert to fraction form
    120,474.36/180,707.09 = 57,339.72/x
  3. Step 3: Cross multiply
    120,474.36x = 180,707.09 × 57,339.72
  4. Step 4: Simplify right side
    120,474.36x = 10,361,693,655.92
  5. Step 5: Solve for x
    x = 10,361,693,655.92/120,474.36
  6. Step 6: Final answer
    x = 86,007.46

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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.