Home / 103,475.40-155,213.10-71,982.60

Finding the Fourth Proportional to 103,475.40, 155,213.10 and 71,982.60

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Solution

The fourth proportional to 103,475.40, 155,213.10 and 71,982.60 is: 107,973.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,475.40 : 155,213.10 = 71,982.60 : x
  2. Step 2: Convert to fraction form
    103,475.40/155,213.10 = 71,982.60/x
  3. Step 3: Cross multiply
    103,475.40x = 155,213.10 × 71,982.60
  4. Step 4: Simplify right side
    103,475.40x = 11,172,642,492.06
  5. Step 5: Solve for x
    x = 11,172,642,492.06/103,475.40
  6. Step 6: Final answer
    x = 107,973.90

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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.