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Finding the Fourth Proportional to 138,281.94, 207,376.76 and 54,020.27

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Solution

The fourth proportional to 138,281.94, 207,376.76 and 54,020.27 is: 81,012.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,281.94 : 207,376.76 = 54,020.27 : x
  2. Step 2: Convert to fraction form
    138,281.94/207,376.76 = 54,020.27/x
  3. Step 3: Cross multiply
    138,281.94x = 207,376.76 × 54,020.27
  4. Step 4: Simplify right side
    138,281.94x = 11,202,547,259.94
  5. Step 5: Solve for x
    x = 11,202,547,259.94/138,281.94
  6. Step 6: Final answer
    x = 81,012.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.