Home / 158,761.28-219,089.79-87,142.52

Finding the Fourth Proportional to 158,761.28, 219,089.79 and 87,142.52

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Solution

The fourth proportional to 158,761.28, 219,089.79 and 87,142.52 is: 120,256.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,761.28 : 219,089.79 = 87,142.52 : x
  2. Step 2: Convert to fraction form
    158,761.28/219,089.79 = 87,142.52/x
  3. Step 3: Cross multiply
    158,761.28x = 219,089.79 × 87,142.52
  4. Step 4: Simplify right side
    158,761.28x = 19,092,036,406.87
  5. Step 5: Solve for x
    x = 19,092,036,406.87/158,761.28
  6. Step 6: Final answer
    x = 120,256.25

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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.