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Finding the Fourth Proportional to 118,000.20, 177,000.30 and 54,820.20

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Solution

The fourth proportional to 118,000.20, 177,000.30 and 54,820.20 is: 82,230.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,000.20 : 177,000.30 = 54,820.20 : x
  2. Step 2: Convert to fraction form
    118,000.20/177,000.30 = 54,820.20/x
  3. Step 3: Cross multiply
    118,000.20x = 177,000.30 × 54,820.20
  4. Step 4: Simplify right side
    118,000.20x = 9,703,191,846.06
  5. Step 5: Solve for x
    x = 9,703,191,846.06/118,000.20
  6. Step 6: Final answer
    x = 82,230.30

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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.