Home / 129,819.12-179,150.28-70,203.12

Finding the Fourth Proportional to 129,819.12, 179,150.28 and 70,203.12

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Solution

The fourth proportional to 129,819.12, 179,150.28 and 70,203.12 is: 96,880.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,819.12 : 179,150.28 = 70,203.12 : x
  2. Step 2: Convert to fraction form
    129,819.12/179,150.28 = 70,203.12/x
  3. Step 3: Cross multiply
    129,819.12x = 179,150.28 × 70,203.12
  4. Step 4: Simplify right side
    129,819.12x = 12,576,908,604.87
  5. Step 5: Solve for x
    x = 12,576,908,604.87/129,819.12
  6. Step 6: Final answer
    x = 96,880.25

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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.