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Finding the Fourth Proportional to 108,040.40, 161,801.40 and 87,304.40

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Solution

The fourth proportional to 108,040.40, 161,801.40 and 87,304.40 is: 130,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,040.40 : 161,801.40 = 87,304.40 : x
  2. Step 2: Convert to fraction form
    108,040.40/161,801.40 = 87,304.40/x
  3. Step 3: Cross multiply
    108,040.40x = 161,801.40 × 87,304.40
  4. Step 4: Simplify right side
    108,040.40x = 14,125,974,146.16
  5. Step 5: Solve for x
    x = 14,125,974,146.16/108,040.40
  6. Step 6: Final answer
    x = 130,747.15

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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.