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Finding the Fourth Proportional to 103,073.60, 154,610.40 and 71,580.80

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Solution

The fourth proportional to 103,073.60, 154,610.40 and 71,580.80 is: 107,371.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,073.60 : 154,610.40 = 71,580.80 : x
  2. Step 2: Convert to fraction form
    103,073.60/154,610.40 = 71,580.80/x
  3. Step 3: Cross multiply
    103,073.60x = 154,610.40 × 71,580.80
  4. Step 4: Simplify right side
    103,073.60x = 11,067,136,120.32
  5. Step 5: Solve for x
    x = 11,067,136,120.32/103,073.60
  6. Step 6: Final answer
    x = 107,371.20

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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.