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Finding the Fourth Proportional to 116,861.40, 175,032.90 and 90,480.60

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Solution

The fourth proportional to 116,861.40, 175,032.90 and 90,480.60 is: 135,520.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,861.40 : 175,032.90 = 90,480.60 : x
  2. Step 2: Convert to fraction form
    116,861.40/175,032.90 = 90,480.60/x
  3. Step 3: Cross multiply
    116,861.40x = 175,032.90 × 90,480.60
  4. Step 4: Simplify right side
    116,861.40x = 15,837,081,811.74
  5. Step 5: Solve for x
    x = 15,837,081,811.74/116,861.40
  6. Step 6: Final answer
    x = 135,520.21

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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.