Home / 117,091.31-161,525.14-71,779.91

Finding the Fourth Proportional to 117,091.31, 161,525.14 and 71,779.91

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Solution

The fourth proportional to 117,091.31, 161,525.14 and 71,779.91 is: 99,018.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,091.31 : 161,525.14 = 71,779.91 : x
  2. Step 2: Convert to fraction form
    117,091.31/161,525.14 = 71,779.91/x
  3. Step 3: Cross multiply
    117,091.31x = 161,525.14 × 71,779.91
  4. Step 4: Simplify right side
    117,091.31x = 11,594,259,024.86
  5. Step 5: Solve for x
    x = 11,594,259,024.86/117,091.31
  6. Step 6: Final answer
    x = 99,018.96

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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.