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Finding the Fourth Proportional to 138,466.80, 207,262.80 and 108,723.60

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Solution

The fourth proportional to 138,466.80, 207,262.80 and 108,723.60 is: 162,741.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,466.80 : 207,262.80 = 108,723.60 : x
  2. Step 2: Convert to fraction form
    138,466.80/207,262.80 = 108,723.60/x
  3. Step 3: Cross multiply
    138,466.80x = 207,262.80 × 108,723.60
  4. Step 4: Simplify right side
    138,466.80x = 22,534,357,762.08
  5. Step 5: Solve for x
    x = 22,534,357,762.08/138,466.80
  6. Step 6: Final answer
    x = 162,741.96

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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.