Home / 86,133.28-118,900.40-80,752.72

Finding the Fourth Proportional to 86,133.28, 118,900.40 and 80,752.72

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Solution

The fourth proportional to 86,133.28, 118,900.40 and 80,752.72 is: 111,472.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,133.28 : 118,900.40 = 80,752.72 : x
  2. Step 2: Convert to fraction form
    86,133.28/118,900.40 = 80,752.72/x
  3. Step 3: Cross multiply
    86,133.28x = 118,900.40 × 80,752.72
  4. Step 4: Simplify right side
    86,133.28x = 9,601,530,709.09
  5. Step 5: Solve for x
    x = 9,601,530,709.09/86,133.28
  6. Step 6: Final answer
    x = 111,472.95

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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.