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Finding the Fourth Proportional to 109,657.70, 164,551.35 and 80,000.90

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Solution

The fourth proportional to 109,657.70, 164,551.35 and 80,000.90 is: 120,048.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,657.70 : 164,551.35 = 80,000.90 : x
  2. Step 2: Convert to fraction form
    109,657.70/164,551.35 = 80,000.90/x
  3. Step 3: Cross multiply
    109,657.70x = 164,551.35 × 80,000.90
  4. Step 4: Simplify right side
    109,657.70x = 13,164,256,096.22
  5. Step 5: Solve for x
    x = 13,164,256,096.22/109,657.70
  6. Step 6: Final answer
    x = 120,048.62

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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.