Home / 129,725.62-179,029.74-73,140.64

Finding the Fourth Proportional to 129,725.62, 179,029.74 and 73,140.64

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Solution

The fourth proportional to 129,725.62, 179,029.74 and 73,140.64 is: 100,938.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,725.62 : 179,029.74 = 73,140.64 : x
  2. Step 2: Convert to fraction form
    129,725.62/179,029.74 = 73,140.64/x
  3. Step 3: Cross multiply
    129,725.62x = 179,029.74 × 73,140.64
  4. Step 4: Simplify right side
    129,725.62x = 13,094,349,762.63
  5. Step 5: Solve for x
    x = 13,094,349,762.63/129,725.62
  6. Step 6: Final answer
    x = 100,938.81

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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.