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Finding the Fourth Proportional to 107,554.60, 161,331.90 and 103,472.20

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Solution

The fourth proportional to 107,554.60, 161,331.90 and 103,472.20 is: 155,208.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,554.60 : 161,331.90 = 103,472.20 : x
  2. Step 2: Convert to fraction form
    107,554.60/161,331.90 = 103,472.20/x
  3. Step 3: Cross multiply
    107,554.60x = 161,331.90 × 103,472.20
  4. Step 4: Simplify right side
    107,554.60x = 16,693,366,623.18
  5. Step 5: Solve for x
    x = 16,693,366,623.18/107,554.60
  6. Step 6: Final answer
    x = 155,208.30

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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.