Home / 111,781.77-154,280.75-64,067.10

Finding the Fourth Proportional to 111,781.77, 154,280.75 and 64,067.10

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Solution

The fourth proportional to 111,781.77, 154,280.75 and 64,067.10 is: 88,425.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,781.77 : 154,280.75 = 64,067.10 : x
  2. Step 2: Convert to fraction form
    111,781.77/154,280.75 = 64,067.10/x
  3. Step 3: Cross multiply
    111,781.77x = 154,280.75 × 64,067.10
  4. Step 4: Simplify right side
    111,781.77x = 9,884,319,917.99
  5. Step 5: Solve for x
    x = 9,884,319,917.99/111,781.77
  6. Step 6: Final answer
    x = 88,425.15

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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.