Home / 90,852.20-136,508.70-80,714.60

Finding the Fourth Proportional to 90,852.20, 136,508.70 and 80,714.60

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Solution

The fourth proportional to 90,852.20, 136,508.70 and 80,714.60 is: 121,276.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,852.20 : 136,508.70 = 80,714.60 : x
  2. Step 2: Convert to fraction form
    90,852.20/136,508.70 = 80,714.60/x
  3. Step 3: Cross multiply
    90,852.20x = 136,508.70 × 80,714.60
  4. Step 4: Simplify right side
    90,852.20x = 11,018,245,117.02
  5. Step 5: Solve for x
    x = 11,018,245,117.02/90,852.20
  6. Step 6: Final answer
    x = 121,276.59

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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.