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Finding the Fourth Proportional to 108,110.80, 162,020.40 and 72,470.80

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Solution

The fourth proportional to 108,110.80, 162,020.40 and 72,470.80 is: 108,608.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,110.80 : 162,020.40 = 72,470.80 : x
  2. Step 2: Convert to fraction form
    108,110.80/162,020.40 = 72,470.80/x
  3. Step 3: Cross multiply
    108,110.80x = 162,020.40 × 72,470.80
  4. Step 4: Simplify right side
    108,110.80x = 11,741,748,004.32
  5. Step 5: Solve for x
    x = 11,741,748,004.32/108,110.80
  6. Step 6: Final answer
    x = 108,608.46

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1.5x scale

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.