Home / 103,039.20-154,558.80-79,682.40

Finding the Fourth Proportional to 103,039.20, 154,558.80 and 79,682.40

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Solution

The fourth proportional to 103,039.20, 154,558.80 and 79,682.40 is: 119,523.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,039.20 : 154,558.80 = 79,682.40 : x
  2. Step 2: Convert to fraction form
    103,039.20/154,558.80 = 79,682.40/x
  3. Step 3: Cross multiply
    103,039.20x = 154,558.80 × 79,682.40
  4. Step 4: Simplify right side
    103,039.20x = 12,315,616,125.12
  5. Step 5: Solve for x
    x = 12,315,616,125.12/103,039.20
  6. Step 6: Final answer
    x = 119,523.60

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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.