Home / 158,942.64-219,331.76-87,321.23

Finding the Fourth Proportional to 158,942.64, 219,331.76 and 87,321.23

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Solution

The fourth proportional to 158,942.64, 219,331.76 and 87,321.23 is: 120,498.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,942.64 : 219,331.76 = 87,321.23 : x
  2. Step 2: Convert to fraction form
    158,942.64/219,331.76 = 87,321.23/x
  3. Step 3: Cross multiply
    158,942.64x = 219,331.76 × 87,321.23
  4. Step 4: Simplify right side
    158,942.64x = 19,152,319,061.26
  5. Step 5: Solve for x
    x = 19,152,319,061.26/158,942.64
  6. Step 6: Final answer
    x = 120,498.31

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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.