Home / 140,642.90-194,087.43-76,984.73

Finding the Fourth Proportional to 140,642.90, 194,087.43 and 76,984.73

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Solution

The fourth proportional to 140,642.90, 194,087.43 and 76,984.73 is: 106,239.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,642.90 : 194,087.43 = 76,984.73 : x
  2. Step 2: Convert to fraction form
    140,642.90/194,087.43 = 76,984.73/x
  3. Step 3: Cross multiply
    140,642.90x = 194,087.43 × 76,984.73
  4. Step 4: Simplify right side
    140,642.90x = 14,941,767,424.51
  5. Step 5: Solve for x
    x = 14,941,767,424.51/140,642.90
  6. Step 6: Final answer
    x = 106,239.05

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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.