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Finding the Fourth Proportional to 118,668.27, 163,762.43 and 64,956.70

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Solution

The fourth proportional to 118,668.27, 163,762.43 and 64,956.70 is: 89,640.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,668.27 : 163,762.43 = 64,956.70 : x
  2. Step 2: Convert to fraction form
    118,668.27/163,762.43 = 64,956.70/x
  3. Step 3: Cross multiply
    118,668.27x = 163,762.43 × 64,956.70
  4. Step 4: Simplify right side
    118,668.27x = 10,637,466,916.70
  5. Step 5: Solve for x
    x = 10,637,466,916.70/118,668.27
  6. Step 6: Final answer
    x = 89,640.36

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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.