Home / 128,210.20-192,315.30-34,715.80

Finding the Fourth Proportional to 128,210.20, 192,315.30 and 34,715.80

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Solution

The fourth proportional to 128,210.20, 192,315.30 and 34,715.80 is: 52,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,210.20 : 192,315.30 = 34,715.80 : x
  2. Step 2: Convert to fraction form
    128,210.20/192,315.30 = 34,715.80/x
  3. Step 3: Cross multiply
    128,210.20x = 192,315.30 × 34,715.80
  4. Step 4: Simplify right side
    128,210.20x = 6,676,379,491.74
  5. Step 5: Solve for x
    x = 6,676,379,491.74/128,210.20
  6. Step 6: Final answer
    x = 52,073.70

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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.