Home / 130,019.10-179,306.30-99,805.70

Finding the Fourth Proportional to 130,019.10, 179,306.30 and 99,805.70

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Solution

The fourth proportional to 130,019.10, 179,306.30 and 99,805.70 is: 137,639.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,019.10 : 179,306.30 = 99,805.70 : x
  2. Step 2: Convert to fraction form
    130,019.10/179,306.30 = 99,805.70/x
  3. Step 3: Cross multiply
    130,019.10x = 179,306.30 × 99,805.70
  4. Step 4: Simplify right side
    130,019.10x = 17,895,790,785.91
  5. Step 5: Solve for x
    x = 17,895,790,785.91/130,019.10
  6. Step 6: Final answer
    x = 137,639.71

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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.