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Finding the Fourth Proportional to 122,000.10, 183,000.15 and 80,144.70

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Solution

The fourth proportional to 122,000.10, 183,000.15 and 80,144.70 is: 120,217.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,000.10 : 183,000.15 = 80,144.70 : x
  2. Step 2: Convert to fraction form
    122,000.10/183,000.15 = 80,144.70/x
  3. Step 3: Cross multiply
    122,000.10x = 183,000.15 × 80,144.70
  4. Step 4: Simplify right side
    122,000.10x = 14,666,492,121.71
  5. Step 5: Solve for x
    x = 14,666,492,121.71/122,000.10
  6. Step 6: Final answer
    x = 120,217.05

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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.