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Finding the Fourth Proportional to 135,685.88, 187,124.02 and 84,703.32

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Solution

The fourth proportional to 135,685.88, 187,124.02 and 84,703.32 is: 116,814.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,685.88 : 187,124.02 = 84,703.32 : x
  2. Step 2: Convert to fraction form
    135,685.88/187,124.02 = 84,703.32/x
  3. Step 3: Cross multiply
    135,685.88x = 187,124.02 × 84,703.32
  4. Step 4: Simplify right side
    135,685.88x = 15,850,026,010.44
  5. Step 5: Solve for x
    x = 15,850,026,010.44/135,685.88
  6. Step 6: Final answer
    x = 116,814.11

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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.