Home / 87,443,999.70-131,165,999.55-86,168,541.30

Finding the Fourth Proportional to 87,443,999.70, 131,165,999.55 and 86,168,541.30

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Solution

The fourth proportional to 87,443,999.70, 131,165,999.55 and 86,168,541.30 is: 129,252,811.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,443,999.70 : 131,165,999.55 = 86,168,541.30 : x
  2. Step 2: Convert to fraction form
    87,443,999.70/131,165,999.55 = 86,168,541.30/x
  3. Step 3: Cross multiply
    87,443,999.70x = 131,165,999.55 × 86,168,541.30
  4. Step 4: Simplify right side
    87,443,999.70x = 11,302,382,849,379,956
  5. Step 5: Solve for x
    x = 11,302,382,849,379,956/87,443,999.70
  6. Step 6: Final answer
    x = 129,252,811.95

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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.