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Finding the Fourth Proportional to 108,243.71, 162,304.81 and 74,549.33

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Solution

The fourth proportional to 108,243.71, 162,304.81 and 74,549.33 is: 111,782.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,243.71 : 162,304.81 = 74,549.33 : x
  2. Step 2: Convert to fraction form
    108,243.71/162,304.81 = 74,549.33/x
  3. Step 3: Cross multiply
    108,243.71x = 162,304.81 × 74,549.33
  4. Step 4: Simplify right side
    108,243.71x = 12,099,714,841.28
  5. Step 5: Solve for x
    x = 12,099,714,841.28/108,243.71
  6. Step 6: Final answer
    x = 111,782.15

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1.5x scale

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.