Home / 112,028.64-154,550.95-66,681.20

Finding the Fourth Proportional to 112,028.64, 154,550.95 and 66,681.20

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Solution

The fourth proportional to 112,028.64, 154,550.95 and 66,681.20 is: 91,991.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,028.64 : 154,550.95 = 66,681.20 : x
  2. Step 2: Convert to fraction form
    112,028.64/154,550.95 = 66,681.20/x
  3. Step 3: Cross multiply
    112,028.64x = 154,550.95 × 66,681.20
  4. Step 4: Simplify right side
    112,028.64x = 10,305,642,807.14
  5. Step 5: Solve for x
    x = 10,305,642,807.14/112,028.64
  6. Step 6: Final answer
    x = 91,991.14

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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.