Home / 91,256.36-125,993.04-81,679.64

Finding the Fourth Proportional to 91,256.36, 125,993.04 and 81,679.64

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Solution

The fourth proportional to 91,256.36, 125,993.04 and 81,679.64 is: 112,770.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,256.36 : 125,993.04 = 81,679.64 : x
  2. Step 2: Convert to fraction form
    91,256.36/125,993.04 = 81,679.64/x
  3. Step 3: Cross multiply
    91,256.36x = 125,993.04 × 81,679.64
  4. Step 4: Simplify right side
    91,256.36x = 10,291,066,149.71
  5. Step 5: Solve for x
    x = 10,291,066,149.71/91,256.36
  6. Step 6: Final answer
    x = 112,770.95

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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.