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Finding the Fourth Proportional to 151,108.98, 208,530.87 and 83,131.11

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Solution

The fourth proportional to 151,108.98, 208,530.87 and 83,131.11 is: 114,721.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,108.98 : 208,530.87 = 83,131.11 : x
  2. Step 2: Convert to fraction form
    151,108.98/208,530.87 = 83,131.11/x
  3. Step 3: Cross multiply
    151,108.98x = 208,530.87 × 83,131.11
  4. Step 4: Simplify right side
    151,108.98x = 17,335,402,692.37
  5. Step 5: Solve for x
    x = 17,335,402,692.37/151,108.98
  6. Step 6: Final answer
    x = 114,721.19

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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.