Home / 144,291.15-199,122.41-78,881.31

Finding the Fourth Proportional to 144,291.15, 199,122.41 and 78,881.31

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Solution

The fourth proportional to 144,291.15, 199,122.41 and 78,881.31 is: 108,856.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,291.15 : 199,122.41 = 78,881.31 : x
  2. Step 2: Convert to fraction form
    144,291.15/199,122.41 = 78,881.31/x
  3. Step 3: Cross multiply
    144,291.15x = 199,122.41 × 78,881.31
  4. Step 4: Simplify right side
    144,291.15x = 15,707,036,156.75
  5. Step 5: Solve for x
    x = 15,707,036,156.75/144,291.15
  6. Step 6: Final answer
    x = 108,856.55

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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.