Home / 156,357-215,795.82-99,001.66

Finding the Fourth Proportional to 156,357, 215,795.82 and 99,001.66

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Solution

The fourth proportional to 156,357, 215,795.82 and 99,001.66 is: 136,636.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,357 : 215,795.82 = 99,001.66 : x
  2. Step 2: Convert to fraction form
    156,357/215,795.82 = 99,001.66/x
  3. Step 3: Cross multiply
    156,357x = 215,795.82 × 99,001.66
  4. Step 4: Simplify right side
    156,357x = 21,364,143,861.57
  5. Step 5: Solve for x
    x = 21,364,143,861.57/156,357
  6. Step 6: Final answer
    x = 136,636.95

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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.