Home / 112,359.21-155,117.97-76,601.76

Finding the Fourth Proportional to 112,359.21, 155,117.97 and 76,601.76

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Solution

The fourth proportional to 112,359.21, 155,117.97 and 76,601.76 is: 105,752.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,359.21 : 155,117.97 = 76,601.76 : x
  2. Step 2: Convert to fraction form
    112,359.21/155,117.97 = 76,601.76/x
  3. Step 3: Cross multiply
    112,359.21x = 155,117.97 × 76,601.76
  4. Step 4: Simplify right side
    112,359.21x = 11,882,309,509.63
  5. Step 5: Solve for x
    x = 11,882,309,509.63/112,359.21
  6. Step 6: Final answer
    x = 105,752.88

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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.