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Finding the Fourth Proportional to 151,909, 209,652.23 and 91,510.13

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Solution

The fourth proportional to 151,909, 209,652.23 and 91,510.13 is: 126,294.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,909 : 209,652.23 = 91,510.13 : x
  2. Step 2: Convert to fraction form
    151,909/209,652.23 = 91,510.13/x
  3. Step 3: Cross multiply
    151,909x = 209,652.23 × 91,510.13
  4. Step 4: Simplify right side
    151,909x = 19,185,302,822.09
  5. Step 5: Solve for x
    x = 19,185,302,822.09/151,909
  6. Step 6: Final answer
    x = 126,294.71

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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.