Home / 151,539.91-209,144.06-87,029.38

Finding the Fourth Proportional to 151,539.91, 209,144.06 and 87,029.38

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Solution

The fourth proportional to 151,539.91, 209,144.06 and 87,029.38 is: 120,111.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,539.91 : 209,144.06 = 87,029.38 : x
  2. Step 2: Convert to fraction form
    151,539.91/209,144.06 = 87,029.38/x
  3. Step 3: Cross multiply
    151,539.91x = 209,144.06 × 87,029.38
  4. Step 4: Simplify right side
    151,539.91x = 18,201,677,872.48
  5. Step 5: Solve for x
    x = 18,201,677,872.48/151,539.91
  6. Step 6: Final answer
    x = 120,111.45

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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.