Home / 84,986.79-127,986.12-74,025.87

Finding the Fourth Proportional to 84,986.79, 127,986.12 and 74,025.87

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Solution

The fourth proportional to 84,986.79, 127,986.12 and 74,025.87 is: 111,479.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,986.79 : 127,986.12 = 74,025.87 : x
  2. Step 2: Convert to fraction form
    84,986.79/127,986.12 = 74,025.87/x
  3. Step 3: Cross multiply
    84,986.79x = 127,986.12 × 74,025.87
  4. Step 4: Simplify right side
    84,986.79x = 9,474,283,880.92
  5. Step 5: Solve for x
    x = 9,474,283,880.92/84,986.79
  6. Step 6: Final answer
    x = 111,479.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.