Home / 112,018.68-154,585.70-61,717.68

Finding the Fourth Proportional to 112,018.68, 154,585.70 and 61,717.68

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Solution

The fourth proportional to 112,018.68, 154,585.70 and 61,717.68 is: 85,170.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,018.68 : 154,585.70 = 61,717.68 : x
  2. Step 2: Convert to fraction form
    112,018.68/154,585.70 = 61,717.68/x
  3. Step 3: Cross multiply
    112,018.68x = 154,585.70 × 61,717.68
  4. Step 4: Simplify right side
    112,018.68x = 9,540,670,765.18
  5. Step 5: Solve for x
    x = 9,540,670,765.18/112,018.68
  6. Step 6: Final answer
    x = 85,170.36

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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.