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Finding the Fourth Proportional to 207,934.30, 312,009.45 and 97,126.30

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Solution

The fourth proportional to 207,934.30, 312,009.45 and 97,126.30 is: 145,739.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,934.30 : 312,009.45 = 97,126.30 : x
  2. Step 2: Convert to fraction form
    207,934.30/312,009.45 = 97,126.30/x
  3. Step 3: Cross multiply
    207,934.30x = 312,009.45 × 97,126.30
  4. Step 4: Simplify right side
    207,934.30x = 30,304,323,443.54
  5. Step 5: Solve for x
    x = 30,304,323,443.54/207,934.30
  6. Step 6: Final answer
    x = 145,739.90

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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.