Home / 112,220.16-154,864.32-61,920.64

Finding the Fourth Proportional to 112,220.16, 154,864.32 and 61,920.64

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Solution

The fourth proportional to 112,220.16, 154,864.32 and 61,920.64 is: 85,450.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,220.16 : 154,864.32 = 61,920.64 : x
  2. Step 2: Convert to fraction form
    112,220.16/154,864.32 = 61,920.64/x
  3. Step 3: Cross multiply
    112,220.16x = 154,864.32 × 61,920.64
  4. Step 4: Simplify right side
    112,220.16x = 9,589,297,807.56
  5. Step 5: Solve for x
    x = 9,589,297,807.56/112,220.16
  6. Step 6: Final answer
    x = 85,450.76

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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.