Home / 131,199.72-181,042.50-76,743.88

Finding the Fourth Proportional to 131,199.72, 181,042.50 and 76,743.88

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Solution

The fourth proportional to 131,199.72, 181,042.50 and 76,743.88 is: 105,898.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,199.72 : 181,042.50 = 76,743.88 : x
  2. Step 2: Convert to fraction form
    131,199.72/181,042.50 = 76,743.88/x
  3. Step 3: Cross multiply
    131,199.72x = 181,042.50 × 76,743.88
  4. Step 4: Simplify right side
    131,199.72x = 13,893,903,894.90
  5. Step 5: Solve for x
    x = 13,893,903,894.90/131,199.72
  6. Step 6: Final answer
    x = 105,898.88

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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.