Home / 158,938.70-219,336.09-87,320.30

Finding the Fourth Proportional to 158,938.70, 219,336.09 and 87,320.30

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Solution

The fourth proportional to 158,938.70, 219,336.09 and 87,320.30 is: 120,502.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,938.70 : 219,336.09 = 87,320.30 : x
  2. Step 2: Convert to fraction form
    158,938.70/219,336.09 = 87,320.30/x
  3. Step 3: Cross multiply
    158,938.70x = 219,336.09 × 87,320.30
  4. Step 4: Simplify right side
    158,938.70x = 19,152,493,179.63
  5. Step 5: Solve for x
    x = 19,152,493,179.63/158,938.70
  6. Step 6: Final answer
    x = 120,502.39

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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.