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Finding the Fourth Proportional to 151,646.48, 209,264.41 and 91,205.49

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Solution

The fourth proportional to 151,646.48, 209,264.41 and 91,205.49 is: 125,858.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,646.48 : 209,264.41 = 91,205.49 : x
  2. Step 2: Convert to fraction form
    151,646.48/209,264.41 = 91,205.49/x
  3. Step 3: Cross multiply
    151,646.48x = 209,264.41 × 91,205.49
  4. Step 4: Simplify right side
    151,646.48x = 19,086,063,952.36
  5. Step 5: Solve for x
    x = 19,086,063,952.36/151,646.48
  6. Step 6: Final answer
    x = 125,858.93

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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.