Home / 123,779.50-170,816.01-67,190.86

Finding the Fourth Proportional to 123,779.50, 170,816.01 and 67,190.86

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Solution

The fourth proportional to 123,779.50, 170,816.01 and 67,190.86 is: 92,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,779.50 : 170,816.01 = 67,190.86 : x
  2. Step 2: Convert to fraction form
    123,779.50/170,816.01 = 67,190.86/x
  3. Step 3: Cross multiply
    123,779.50x = 170,816.01 × 67,190.86
  4. Step 4: Simplify right side
    123,779.50x = 11,477,274,613.67
  5. Step 5: Solve for x
    x = 11,477,274,613.67/123,779.50
  6. Step 6: Final answer
    x = 92,723.55

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1.5x scale

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.