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Finding the Fourth Proportional to 127,396, 175,817.42 and 70,818.31

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Solution

The fourth proportional to 127,396, 175,817.42 and 70,818.31 is: 97,735.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,396 : 175,817.42 = 70,818.31 : x
  2. Step 2: Convert to fraction form
    127,396/175,817.42 = 70,818.31/x
  3. Step 3: Cross multiply
    127,396x = 175,817.42 × 70,818.31
  4. Step 4: Simplify right side
    127,396x = 12,451,092,552.96
  5. Step 5: Solve for x
    x = 12,451,092,552.96/127,396
  6. Step 6: Final answer
    x = 97,735.35

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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.