Home / 124,739.67-172,091.88-76,909.98

Finding the Fourth Proportional to 124,739.67, 172,091.88 and 76,909.98

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Solution

The fourth proportional to 124,739.67, 172,091.88 and 76,909.98 is: 106,105.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,739.67 : 172,091.88 = 76,909.98 : x
  2. Step 2: Convert to fraction form
    124,739.67/172,091.88 = 76,909.98/x
  3. Step 3: Cross multiply
    124,739.67x = 172,091.88 × 76,909.98
  4. Step 4: Simplify right side
    124,739.67x = 13,235,583,048.96
  5. Step 5: Solve for x
    x = 13,235,583,048.96/124,739.67
  6. Step 6: Final answer
    x = 106,105.64

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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.