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Finding the Fourth Proportional to 118,406.90, 177,457.25 and 88,590.80

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Solution

The fourth proportional to 118,406.90, 177,457.25 and 88,590.80 is: 132,771.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,406.90 : 177,457.25 = 88,590.80 : x
  2. Step 2: Convert to fraction form
    118,406.90/177,457.25 = 88,590.80/x
  3. Step 3: Cross multiply
    118,406.90x = 177,457.25 × 88,590.80
  4. Step 4: Simplify right side
    118,406.90x = 15,721,079,743.30
  5. Step 5: Solve for x
    x = 15,721,079,743.30/118,406.90
  6. Step 6: Final answer
    x = 132,771.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.