Home / 131,963.28-182,104.83-78,216.36

Finding the Fourth Proportional to 131,963.28, 182,104.83 and 78,216.36

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Solution

The fourth proportional to 131,963.28, 182,104.83 and 78,216.36 is: 107,935.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,963.28 : 182,104.83 = 78,216.36 : x
  2. Step 2: Convert to fraction form
    131,963.28/182,104.83 = 78,216.36/x
  3. Step 3: Cross multiply
    131,963.28x = 182,104.83 × 78,216.36
  4. Step 4: Simplify right side
    131,963.28x = 14,243,576,941.02
  5. Step 5: Solve for x
    x = 14,243,576,941.02/131,963.28
  6. Step 6: Final answer
    x = 107,935.91

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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.