Home / 154,701.38-213,497.78-86,718.39

Finding the Fourth Proportional to 154,701.38, 213,497.78 and 86,718.39

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Solution

The fourth proportional to 154,701.38, 213,497.78 and 86,718.39 is: 119,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,701.38 : 213,497.78 = 86,718.39 : x
  2. Step 2: Convert to fraction form
    154,701.38/213,497.78 = 86,718.39/x
  3. Step 3: Cross multiply
    154,701.38x = 213,497.78 × 86,718.39
  4. Step 4: Simplify right side
    154,701.38x = 18,514,182,515.97
  5. Step 5: Solve for x
    x = 18,514,182,515.97/154,701.38
  6. Step 6: Final answer
    x = 119,676.90

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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.