Home / 129,810.32-179,137.34-75,358.12

Finding the Fourth Proportional to 129,810.32, 179,137.34 and 75,358.12

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Solution

The fourth proportional to 129,810.32, 179,137.34 and 75,358.12 is: 103,993.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,810.32 : 179,137.34 = 75,358.12 : x
  2. Step 2: Convert to fraction form
    129,810.32/179,137.34 = 75,358.12/x
  3. Step 3: Cross multiply
    129,810.32x = 179,137.34 × 75,358.12
  4. Step 4: Simplify right side
    129,810.32x = 13,499,453,164.20
  5. Step 5: Solve for x
    x = 13,499,453,164.20/129,810.32
  6. Step 6: Final answer
    x = 103,993.68

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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.