Home / 120,686.24-180,986.16-41,779.28

Finding the Fourth Proportional to 120,686.24, 180,986.16 and 41,779.28

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Solution

The fourth proportional to 120,686.24, 180,986.16 and 41,779.28 is: 62,653.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,686.24 : 180,986.16 = 41,779.28 : x
  2. Step 2: Convert to fraction form
    120,686.24/180,986.16 = 41,779.28/x
  3. Step 3: Cross multiply
    120,686.24x = 180,986.16 × 41,779.28
  4. Step 4: Simplify right side
    120,686.24x = 7,561,471,454.76
  5. Step 5: Solve for x
    x = 7,561,471,454.76/120,686.24
  6. Step 6: Final answer
    x = 62,653.96

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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.