Home / 231,139.17-318,964.84-135,643.82

Finding the Fourth Proportional to 231,139.17, 318,964.84 and 135,643.82

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Solution

The fourth proportional to 231,139.17, 318,964.84 and 135,643.82 is: 187,184.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,139.17 : 318,964.84 = 135,643.82 : x
  2. Step 2: Convert to fraction form
    231,139.17/318,964.84 = 135,643.82/x
  3. Step 3: Cross multiply
    231,139.17x = 318,964.84 × 135,643.82
  4. Step 4: Simplify right side
    231,139.17x = 43,265,607,409.36
  5. Step 5: Solve for x
    x = 43,265,607,409.36/231,139.17
  6. Step 6: Final answer
    x = 187,184.23

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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.