Home / 124,739.42-172,091.54-76,909.74

Finding the Fourth Proportional to 124,739.42, 172,091.54 and 76,909.74

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Solution

The fourth proportional to 124,739.42, 172,091.54 and 76,909.74 is: 106,105.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,739.42 : 172,091.54 = 76,909.74 : x
  2. Step 2: Convert to fraction form
    124,739.42/172,091.54 = 76,909.74/x
  3. Step 3: Cross multiply
    124,739.42x = 172,091.54 × 76,909.74
  4. Step 4: Simplify right side
    124,739.42x = 13,235,515,597.60
  5. Step 5: Solve for x
    x = 13,235,515,597.60/124,739.42
  6. Step 6: Final answer
    x = 106,105.32

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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.