Home / 131,514.42-181,474.99-77,779.83

Finding the Fourth Proportional to 131,514.42, 181,474.99 and 77,779.83

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Solution

The fourth proportional to 131,514.42, 181,474.99 and 77,779.83 is: 107,327.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,514.42 : 181,474.99 = 77,779.83 : x
  2. Step 2: Convert to fraction form
    131,514.42/181,474.99 = 77,779.83/x
  3. Step 3: Cross multiply
    131,514.42x = 181,474.99 × 77,779.83
  4. Step 4: Simplify right side
    131,514.42x = 14,115,093,871.45
  5. Step 5: Solve for x
    x = 14,115,093,871.45/131,514.42
  6. Step 6: Final answer
    x = 107,327.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.