Home / 129,804.25-179,132.20-76,127.98

Finding the Fourth Proportional to 129,804.25, 179,132.20 and 76,127.98

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Solution

The fourth proportional to 129,804.25, 179,132.20 and 76,127.98 is: 105,057.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,804.25 : 179,132.20 = 76,127.98 : x
  2. Step 2: Convert to fraction form
    129,804.25/179,132.20 = 76,127.98/x
  3. Step 3: Cross multiply
    129,804.25x = 179,132.20 × 76,127.98
  4. Step 4: Simplify right side
    129,804.25x = 13,636,972,538.96
  5. Step 5: Solve for x
    x = 13,636,972,538.96/129,804.25
  6. Step 6: Final answer
    x = 105,057.98

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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.