Home / 185,919.69-256,537.49-105,330.57

Finding the Fourth Proportional to 185,919.69, 256,537.49 and 105,330.57

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Solution

The fourth proportional to 185,919.69, 256,537.49 and 105,330.57 is: 145,338.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,919.69 : 256,537.49 = 105,330.57 : x
  2. Step 2: Convert to fraction form
    185,919.69/256,537.49 = 105,330.57/x
  3. Step 3: Cross multiply
    185,919.69x = 256,537.49 × 105,330.57
  4. Step 4: Simplify right side
    185,919.69x = 27,021,239,521.42
  5. Step 5: Solve for x
    x = 27,021,239,521.42/185,919.69
  6. Step 6: Final answer
    x = 145,338.23

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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.