Home / 131,829.57-181,933.17-78,103.17

Finding the Fourth Proportional to 131,829.57, 181,933.17 and 78,103.17

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Solution

The fourth proportional to 131,829.57, 181,933.17 and 78,103.17 is: 107,787.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,829.57 : 181,933.17 = 78,103.17 : x
  2. Step 2: Convert to fraction form
    131,829.57/181,933.17 = 78,103.17/x
  3. Step 3: Cross multiply
    131,829.57x = 181,933.17 × 78,103.17
  4. Step 4: Simplify right side
    131,829.57x = 14,209,557,305.15
  5. Step 5: Solve for x
    x = 14,209,557,305.15/131,829.57
  6. Step 6: Final answer
    x = 107,787.33

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1.5x scale

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.