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Finding the Fourth Proportional to 118,668.62, 163,762.16 and 64,953.47

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Solution

The fourth proportional to 118,668.62, 163,762.16 and 64,953.47 is: 89,635.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,668.62 : 163,762.16 = 64,953.47 : x
  2. Step 2: Convert to fraction form
    118,668.62/163,762.16 = 64,953.47/x
  3. Step 3: Cross multiply
    118,668.62x = 163,762.16 × 64,953.47
  4. Step 4: Simplify right side
    118,668.62x = 10,636,919,403.12
  5. Step 5: Solve for x
    x = 10,636,919,403.12/118,668.62
  6. Step 6: Final answer
    x = 89,635.49

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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.