Home / 129,369,498.96-178,610,479.20-82,353,100.80

Finding the Fourth Proportional to 129,369,498.96, 178,610,479.20 and 82,353,100.80

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Solution

The fourth proportional to 129,369,498.96, 178,610,479.20 and 82,353,100.80 is: 113,698,568.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,369,498.96 : 178,610,479.20 = 82,353,100.80 : x
  2. Step 2: Convert to fraction form
    129,369,498.96/178,610,479.20 = 82,353,100.80/x
  3. Step 3: Cross multiply
    129,369,498.96x = 178,610,479.20 × 82,353,100.80
  4. Step 4: Simplify right side
    129,369,498.96x = 14,709,126,797,493,902
  5. Step 5: Solve for x
    x = 14,709,126,797,493,902/129,369,498.96
  6. Step 6: Final answer
    x = 113,698,568.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.