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Finding the Fourth Proportional to 127,269.44, 175,641.28 and 78,880.88

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Solution

The fourth proportional to 127,269.44, 175,641.28 and 78,880.88 is: 108,861.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,269.44 : 175,641.28 = 78,880.88 : x
  2. Step 2: Convert to fraction form
    127,269.44/175,641.28 = 78,880.88/x
  3. Step 3: Cross multiply
    127,269.44x = 175,641.28 × 78,880.88
  4. Step 4: Simplify right side
    127,269.44x = 13,854,738,730.73
  5. Step 5: Solve for x
    x = 13,854,738,730.73/127,269.44
  6. Step 6: Final answer
    x = 108,861.47

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1.5x scale

Why These Related Problems?

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