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Finding the Fourth Proportional to 118,162.56, 162,982.88 and 70,378.88

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Solution

The fourth proportional to 118,162.56, 162,982.88 and 70,378.88 is: 97,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,162.56 : 162,982.88 = 70,378.88 : x
  2. Step 2: Convert to fraction form
    118,162.56/162,982.88 = 70,378.88/x
  3. Step 3: Cross multiply
    118,162.56x = 162,982.88 × 70,378.88
  4. Step 4: Simplify right side
    118,162.56x = 11,470,552,553.57
  5. Step 5: Solve for x
    x = 11,470,552,553.57/118,162.56
  6. Step 6: Final answer
    x = 97,074.34

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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.