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Finding the Fourth Proportional to 118,606.40, 163,679.92 and 64,893.68

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Solution

The fourth proportional to 118,606.40, 163,679.92 and 64,893.68 is: 89,554.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,606.40 : 163,679.92 = 64,893.68 : x
  2. Step 2: Convert to fraction form
    118,606.40/163,679.92 = 64,893.68/x
  3. Step 3: Cross multiply
    118,606.40x = 163,679.92 × 64,893.68
  4. Step 4: Simplify right side
    118,606.40x = 10,621,792,350.91
  5. Step 5: Solve for x
    x = 10,621,792,350.91/118,606.40
  6. Step 6: Final answer
    x = 89,554.97

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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.