Home / 140,648.40-194,087.28-76,973.88

Finding the Fourth Proportional to 140,648.40, 194,087.28 and 76,973.88

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Solution

The fourth proportional to 140,648.40, 194,087.28 and 76,973.88 is: 106,219.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,648.40 : 194,087.28 = 76,973.88 : x
  2. Step 2: Convert to fraction form
    140,648.40/194,087.28 = 76,973.88/x
  3. Step 3: Cross multiply
    140,648.40x = 194,087.28 × 76,973.88
  4. Step 4: Simplify right side
    140,648.40x = 14,939,651,000.25
  5. Step 5: Solve for x
    x = 14,939,651,000.25/140,648.40
  6. Step 6: Final answer
    x = 106,219.84

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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.