Home / 130,078.50-179,537.25-79,080.42

Finding the Fourth Proportional to 130,078.50, 179,537.25 and 79,080.42

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Solution

The fourth proportional to 130,078.50, 179,537.25 and 79,080.42 is: 109,148.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,078.50 : 179,537.25 = 79,080.42 : x
  2. Step 2: Convert to fraction form
    130,078.50/179,537.25 = 79,080.42/x
  3. Step 3: Cross multiply
    130,078.50x = 179,537.25 × 79,080.42
  4. Step 4: Simplify right side
    130,078.50x = 14,197,881,135.65
  5. Step 5: Solve for x
    x = 14,197,881,135.65/130,078.50
  6. Step 6: Final answer
    x = 109,148.56

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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.