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Finding the Fourth Proportional to 177,420.20, 266,130.30 and 84,108.20

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Solution

The fourth proportional to 177,420.20, 266,130.30 and 84,108.20 is: 126,162.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,420.20 : 266,130.30 = 84,108.20 : x
  2. Step 2: Convert to fraction form
    177,420.20/266,130.30 = 84,108.20/x
  3. Step 3: Cross multiply
    177,420.20x = 266,130.30 × 84,108.20
  4. Step 4: Simplify right side
    177,420.20x = 22,383,740,498.46
  5. Step 5: Solve for x
    x = 22,383,740,498.46/177,420.20
  6. Step 6: Final answer
    x = 126,162.30

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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.