Home / 112,722.68-155,544.18-64,975.70

Finding the Fourth Proportional to 112,722.68, 155,544.18 and 64,975.70

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Solution

The fourth proportional to 112,722.68, 155,544.18 and 64,975.70 is: 89,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,722.68 : 155,544.18 = 64,975.70 : x
  2. Step 2: Convert to fraction form
    112,722.68/155,544.18 = 64,975.70/x
  3. Step 3: Cross multiply
    112,722.68x = 155,544.18 × 64,975.70
  4. Step 4: Simplify right side
    112,722.68x = 10,106,591,976.43
  5. Step 5: Solve for x
    x = 10,106,591,976.43/112,722.68
  6. Step 6: Final answer
    x = 89,658.90

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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.