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Finding the Fourth Proportional to 108,871.71, 150,240.74 and 61,125.06

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Solution

The fourth proportional to 108,871.71, 150,240.74 and 61,125.06 is: 84,351.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,871.71 : 150,240.74 = 61,125.06 : x
  2. Step 2: Convert to fraction form
    108,871.71/150,240.74 = 61,125.06/x
  3. Step 3: Cross multiply
    108,871.71x = 150,240.74 × 61,125.06
  4. Step 4: Simplify right side
    108,871.71x = 9,183,473,941.32
  5. Step 5: Solve for x
    x = 9,183,473,941.32/108,871.71
  6. Step 6: Final answer
    x = 84,351.33

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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.