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Finding the Fourth Proportional to 112,133.70, 168,200.55 and 70,661.70

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Solution

The fourth proportional to 112,133.70, 168,200.55 and 70,661.70 is: 105,992.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,133.70 : 168,200.55 = 70,661.70 : x
  2. Step 2: Convert to fraction form
    112,133.70/168,200.55 = 70,661.70/x
  3. Step 3: Cross multiply
    112,133.70x = 168,200.55 × 70,661.70
  4. Step 4: Simplify right side
    112,133.70x = 11,885,336,803.94
  5. Step 5: Solve for x
    x = 11,885,336,803.94/112,133.70
  6. Step 6: Final answer
    x = 105,992.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.