Home / 230,145.83-317,578.55-128,180.81

Finding the Fourth Proportional to 230,145.83, 317,578.55 and 128,180.81

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Solution

The fourth proportional to 230,145.83, 317,578.55 and 128,180.81 is: 176,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,145.83 : 317,578.55 = 128,180.81 : x
  2. Step 2: Convert to fraction form
    230,145.83/317,578.55 = 128,180.81/x
  3. Step 3: Cross multiply
    230,145.83x = 317,578.55 × 128,180.81
  4. Step 4: Simplify right side
    230,145.83x = 40,707,473,548.83
  5. Step 5: Solve for x
    x = 40,707,473,548.83/230,145.83
  6. Step 6: Final answer
    x = 176,876.87

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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.