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Finding the Fourth Proportional to 172,779.86, 259,062.86 and 67,475

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Solution

The fourth proportional to 172,779.86, 259,062.86 and 67,475 is: 101,170.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,779.86 : 259,062.86 = 67,475 : x
  2. Step 2: Convert to fraction form
    172,779.86/259,062.86 = 67,475/x
  3. Step 3: Cross multiply
    172,779.86x = 259,062.86 × 67,475
  4. Step 4: Simplify right side
    172,779.86x = 17,480,266,478.50
  5. Step 5: Solve for x
    x = 17,480,266,478.50/172,779.86
  6. Step 6: Final answer
    x = 101,170.74

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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.