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Finding the Fourth Proportional to 151,478.65, 209,040.95 and 91,083.88

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Solution

The fourth proportional to 151,478.65, 209,040.95 and 91,083.88 is: 125,696.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,478.65 : 209,040.95 = 91,083.88 : x
  2. Step 2: Convert to fraction form
    151,478.65/209,040.95 = 91,083.88/x
  3. Step 3: Cross multiply
    151,478.65x = 209,040.95 × 91,083.88
  4. Step 4: Simplify right side
    151,478.65x = 19,040,259,304.26
  5. Step 5: Solve for x
    x = 19,040,259,304.26/151,478.65
  6. Step 6: Final answer
    x = 125,696.00

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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.