Home / 111,621.28-154,036.56-61,319.20

Finding the Fourth Proportional to 111,621.28, 154,036.56 and 61,319.20

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Solution

The fourth proportional to 111,621.28, 154,036.56 and 61,319.20 is: 84,620.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,621.28 : 154,036.56 = 61,319.20 : x
  2. Step 2: Convert to fraction form
    111,621.28/154,036.56 = 61,319.20/x
  3. Step 3: Cross multiply
    111,621.28x = 154,036.56 × 61,319.20
  4. Step 4: Simplify right side
    111,621.28x = 9,445,398,629.95
  5. Step 5: Solve for x
    x = 9,445,398,629.95/111,621.28
  6. Step 6: Final answer
    x = 84,620.05

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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.