Home / 138,672.24-191,300.04-84,940.08

Finding the Fourth Proportional to 138,672.24, 191,300.04 and 84,940.08

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Solution

The fourth proportional to 138,672.24, 191,300.04 and 84,940.08 is: 117,175.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,672.24 : 191,300.04 = 84,940.08 : x
  2. Step 2: Convert to fraction form
    138,672.24/191,300.04 = 84,940.08/x
  3. Step 3: Cross multiply
    138,672.24x = 191,300.04 × 84,940.08
  4. Step 4: Simplify right side
    138,672.24x = 16,249,040,701.60
  5. Step 5: Solve for x
    x = 16,249,040,701.60/138,672.24
  6. Step 6: Final answer
    x = 117,175.87

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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.