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Finding the Fourth Proportional to 124,872, 187,308.18 and 51,000

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Solution

The fourth proportional to 124,872, 187,308.18 and 51,000 is: 76,500.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,872 : 187,308.18 = 51,000 : x
  2. Step 2: Convert to fraction form
    124,872/187,308.18 = 51,000/x
  3. Step 3: Cross multiply
    124,872x = 187,308.18 × 51,000
  4. Step 4: Simplify right side
    124,872x = 9,552,717,180
  5. Step 5: Solve for x
    x = 9,552,717,180/124,872
  6. Step 6: Final answer
    x = 76,500.07

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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.