Home / 129,760.16-179,069.28-70,144.16

Finding the Fourth Proportional to 129,760.16, 179,069.28 and 70,144.16

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Solution

The fourth proportional to 129,760.16, 179,069.28 and 70,144.16 is: 96,799.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,760.16 : 179,069.28 = 70,144.16 : x
  2. Step 2: Convert to fraction form
    129,760.16/179,069.28 = 70,144.16/x
  3. Step 3: Cross multiply
    129,760.16x = 179,069.28 × 70,144.16
  4. Step 4: Simplify right side
    129,760.16x = 12,560,664,227.40
  5. Step 5: Solve for x
    x = 12,560,664,227.40/129,760.16
  6. Step 6: Final answer
    x = 96,799.08

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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.