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Finding the Fourth Proportional to 104,841.20, 157,261.80 and 81,484.40

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Solution

The fourth proportional to 104,841.20, 157,261.80 and 81,484.40 is: 122,226.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,841.20 : 157,261.80 = 81,484.40 : x
  2. Step 2: Convert to fraction form
    104,841.20/157,261.80 = 81,484.40/x
  3. Step 3: Cross multiply
    104,841.20x = 157,261.80 × 81,484.40
  4. Step 4: Simplify right side
    104,841.20x = 12,814,383,415.92
  5. Step 5: Solve for x
    x = 12,814,383,415.92/104,841.20
  6. Step 6: Final answer
    x = 122,226.60

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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.