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Finding the Fourth Proportional to 135,509, 187,002.42 and 75,893

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Solution

The fourth proportional to 135,509, 187,002.42 and 75,893 is: 104,732.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,509 : 187,002.42 = 75,893 : x
  2. Step 2: Convert to fraction form
    135,509/187,002.42 = 75,893/x
  3. Step 3: Cross multiply
    135,509x = 187,002.42 × 75,893
  4. Step 4: Simplify right side
    135,509x = 14,192,174,661.06
  5. Step 5: Solve for x
    x = 14,192,174,661.06/135,509
  6. Step 6: Final answer
    x = 104,732.34

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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.