Home / 129,288,321.72-178,421,669.82-70,554,771.54

Finding the Fourth Proportional to 129,288,321.72, 178,421,669.82 and 70,554,771.54

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Solution

The fourth proportional to 129,288,321.72, 178,421,669.82 and 70,554,771.54 is: 97,367,650.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,288,321.72 : 178,421,669.82 = 70,554,771.54 : x
  2. Step 2: Convert to fraction form
    129,288,321.72/178,421,669.82 = 70,554,771.54/x
  3. Step 3: Cross multiply
    129,288,321.72x = 178,421,669.82 × 70,554,771.54
  4. Step 4: Simplify right side
    129,288,321.72x = 12,588,500,151,935,414
  5. Step 5: Solve for x
    x = 12,588,500,151,935,414/129,288,321.72
  6. Step 6: Final answer
    x = 97,367,650.72

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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.