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Finding the Fourth Proportional to 118,118.89, 163,022.76 and 70,399.92

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Solution

The fourth proportional to 118,118.89, 163,022.76 and 70,399.92 is: 97,163.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,118.89 : 163,022.76 = 70,399.92 : x
  2. Step 2: Convert to fraction form
    118,118.89/163,022.76 = 70,399.92/x
  3. Step 3: Cross multiply
    118,118.89x = 163,022.76 × 70,399.92
  4. Step 4: Simplify right side
    118,118.89x = 11,476,789,262.18
  5. Step 5: Solve for x
    x = 11,476,789,262.18/118,118.89
  6. Step 6: Final answer
    x = 97,163.03

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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.