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Finding the Fourth Proportional to 126,555.90, 174,641.60 and 72,842.64

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Solution

The fourth proportional to 126,555.90, 174,641.60 and 72,842.64 is: 100,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,555.90 : 174,641.60 = 72,842.64 : x
  2. Step 2: Convert to fraction form
    126,555.90/174,641.60 = 72,842.64/x
  3. Step 3: Cross multiply
    126,555.90x = 174,641.60 × 72,842.64
  4. Step 4: Simplify right side
    126,555.90x = 12,721,355,197.82
  5. Step 5: Solve for x
    x = 12,721,355,197.82/126,555.90
  6. Step 6: Final answer
    x = 100,519.65

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.