Home / 103,424.20-155,136.30-67,994.80

Finding the Fourth Proportional to 103,424.20, 155,136.30 and 67,994.80

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Solution

The fourth proportional to 103,424.20, 155,136.30 and 67,994.80 is: 101,992.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,424.20 : 155,136.30 = 67,994.80 : x
  2. Step 2: Convert to fraction form
    103,424.20/155,136.30 = 67,994.80/x
  3. Step 3: Cross multiply
    103,424.20x = 155,136.30 × 67,994.80
  4. Step 4: Simplify right side
    103,424.20x = 10,548,461,691.24
  5. Step 5: Solve for x
    x = 10,548,461,691.24/103,424.20
  6. Step 6: Final answer
    x = 101,992.20

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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.