Home / 159,349.35-219,893.75-87,715.38

Finding the Fourth Proportional to 159,349.35, 219,893.75 and 87,715.38

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Solution

The fourth proportional to 159,349.35, 219,893.75 and 87,715.38 is: 121,042.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,349.35 : 219,893.75 = 87,715.38 : x
  2. Step 2: Convert to fraction form
    159,349.35/219,893.75 = 87,715.38/x
  3. Step 3: Cross multiply
    159,349.35x = 219,893.75 × 87,715.38
  4. Step 4: Simplify right side
    159,349.35x = 19,288,063,840.88
  5. Step 5: Solve for x
    x = 19,288,063,840.88/159,349.35
  6. Step 6: Final answer
    x = 121,042.63

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1.5x scale

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.