Home / 111,785.32-154,266.66-61,485.64

Finding the Fourth Proportional to 111,785.32, 154,266.66 and 61,485.64

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Solution

The fourth proportional to 111,785.32, 154,266.66 and 61,485.64 is: 84,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,785.32 : 154,266.66 = 61,485.64 : x
  2. Step 2: Convert to fraction form
    111,785.32/154,266.66 = 61,485.64/x
  3. Step 3: Cross multiply
    111,785.32x = 154,266.66 × 61,485.64
  4. Step 4: Simplify right side
    111,785.32x = 9,485,184,320.76
  5. Step 5: Solve for x
    x = 9,485,184,320.76/111,785.32
  6. Step 6: Final answer
    x = 84,851.79

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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.