Home / 103,136.20-154,704.30-90,670.30

Finding the Fourth Proportional to 103,136.20, 154,704.30 and 90,670.30

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Solution

The fourth proportional to 103,136.20, 154,704.30 and 90,670.30 is: 136,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,136.20 : 154,704.30 = 90,670.30 : x
  2. Step 2: Convert to fraction form
    103,136.20/154,704.30 = 90,670.30/x
  3. Step 3: Cross multiply
    103,136.20x = 154,704.30 × 90,670.30
  4. Step 4: Simplify right side
    103,136.20x = 14,027,085,292.29
  5. Step 5: Solve for x
    x = 14,027,085,292.29/103,136.20
  6. Step 6: Final answer
    x = 136,005.45

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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.