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Finding the Fourth Proportional to 127,405.68, 175,825.80 and 70,818

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Solution

The fourth proportional to 127,405.68, 175,825.80 and 70,818 is: 97,732.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,405.68 : 175,825.80 = 70,818 : x
  2. Step 2: Convert to fraction form
    127,405.68/175,825.80 = 70,818/x
  3. Step 3: Cross multiply
    127,405.68x = 175,825.80 × 70,818
  4. Step 4: Simplify right side
    127,405.68x = 12,451,631,504.40
  5. Step 5: Solve for x
    x = 12,451,631,504.40/127,405.68
  6. Step 6: Final answer
    x = 97,732.15

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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.