Home / 112,694.88-155,521.32-61,709.76

Finding the Fourth Proportional to 112,694.88, 155,521.32 and 61,709.76

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Solution

The fourth proportional to 112,694.88, 155,521.32 and 61,709.76 is: 85,160.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,694.88 : 155,521.32 = 61,709.76 : x
  2. Step 2: Convert to fraction form
    112,694.88/155,521.32 = 61,709.76/x
  3. Step 3: Cross multiply
    112,694.88x = 155,521.32 × 61,709.76
  4. Step 4: Simplify right side
    112,694.88x = 9,597,183,332.08
  5. Step 5: Solve for x
    x = 9,597,183,332.08/112,694.88
  6. Step 6: Final answer
    x = 85,160.78

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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.