Home / 112,013.16-154,545.21-66,668.36

Finding the Fourth Proportional to 112,013.16, 154,545.21 and 66,668.36

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Solution

The fourth proportional to 112,013.16, 154,545.21 and 66,668.36 is: 91,982.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,013.16 : 154,545.21 = 66,668.36 : x
  2. Step 2: Convert to fraction form
    112,013.16/154,545.21 = 66,668.36/x
  3. Step 3: Cross multiply
    112,013.16x = 154,545.21 × 66,668.36
  4. Step 4: Simplify right side
    112,013.16x = 10,303,274,923.83
  5. Step 5: Solve for x
    x = 10,303,274,923.83/112,013.16
  6. Step 6: Final answer
    x = 91,982.72

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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.