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Finding the Fourth Proportional to 103,619.20, 155,428.80 and 95,324.80

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Solution

The fourth proportional to 103,619.20, 155,428.80 and 95,324.80 is: 142,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.20 : 155,428.80 = 95,324.80 : x
  2. Step 2: Convert to fraction form
    103,619.20/155,428.80 = 95,324.80/x
  3. Step 3: Cross multiply
    103,619.20x = 155,428.80 × 95,324.80
  4. Step 4: Simplify right side
    103,619.20x = 14,816,219,274.24
  5. Step 5: Solve for x
    x = 14,816,219,274.24/103,619.20
  6. Step 6: Final answer
    x = 142,987.20

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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.