Home / 111,815.12-154,305.54-60,828.32

Finding the Fourth Proportional to 111,815.12, 154,305.54 and 60,828.32

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Solution

The fourth proportional to 111,815.12, 154,305.54 and 60,828.32 is: 83,943.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,815.12 : 154,305.54 = 60,828.32 : x
  2. Step 2: Convert to fraction form
    111,815.12/154,305.54 = 60,828.32/x
  3. Step 3: Cross multiply
    111,815.12x = 154,305.54 × 60,828.32
  4. Step 4: Simplify right side
    111,815.12x = 9,386,145,993.37
  5. Step 5: Solve for x
    x = 9,386,145,993.37/111,815.12
  6. Step 6: Final answer
    x = 83,943.45

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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.