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Finding the Fourth Proportional to 103,060.20, 154,590.30 and 80,941.80

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Solution

The fourth proportional to 103,060.20, 154,590.30 and 80,941.80 is: 121,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,060.20 : 154,590.30 = 80,941.80 : x
  2. Step 2: Convert to fraction form
    103,060.20/154,590.30 = 80,941.80/x
  3. Step 3: Cross multiply
    103,060.20x = 154,590.30 × 80,941.80
  4. Step 4: Simplify right side
    103,060.20x = 12,512,817,144.54
  5. Step 5: Solve for x
    x = 12,512,817,144.54/103,060.20
  6. Step 6: Final answer
    x = 121,412.70

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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.