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Finding the Fourth Proportional to 99,080.21, 148,664.36 and 40,031.21

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Solution

The fourth proportional to 99,080.21, 148,664.36 and 40,031.21 is: 60,064.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,080.21 : 148,664.36 = 40,031.21 : x
  2. Step 2: Convert to fraction form
    99,080.21/148,664.36 = 40,031.21/x
  3. Step 3: Cross multiply
    99,080.21x = 148,664.36 × 40,031.21
  4. Step 4: Simplify right side
    99,080.21x = 5,951,214,686.41
  5. Step 5: Solve for x
    x = 5,951,214,686.41/99,080.21
  6. Step 6: Final answer
    x = 60,064.61

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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.