Home / 82,117.14-123,175.71-19,787.64

Finding the Fourth Proportional to 82,117.14, 123,175.71 and 19,787.64

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Solution

The fourth proportional to 82,117.14, 123,175.71 and 19,787.64 is: 29,681.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,117.14 : 123,175.71 = 19,787.64 : x
  2. Step 2: Convert to fraction form
    82,117.14/123,175.71 = 19,787.64/x
  3. Step 3: Cross multiply
    82,117.14x = 123,175.71 × 19,787.64
  4. Step 4: Simplify right side
    82,117.14x = 2,437,356,606.22
  5. Step 5: Solve for x
    x = 2,437,356,606.22/82,117.14
  6. Step 6: Final answer
    x = 29,681.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.