Home / 117,779.76-162,589.14-77,514.66

Finding the Fourth Proportional to 117,779.76, 162,589.14 and 77,514.66

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Solution

The fourth proportional to 117,779.76, 162,589.14 and 77,514.66 is: 107,005.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,779.76 : 162,589.14 = 77,514.66 : x
  2. Step 2: Convert to fraction form
    117,779.76/162,589.14 = 77,514.66/x
  3. Step 3: Cross multiply
    117,779.76x = 162,589.14 × 77,514.66
  4. Step 4: Simplify right side
    117,779.76x = 12,603,041,906.79
  5. Step 5: Solve for x
    x = 12,603,041,906.79/117,779.76
  6. Step 6: Final answer
    x = 107,005.16

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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.