Home / 140,921.40-194,471.07-76,390.89

Finding the Fourth Proportional to 140,921.40, 194,471.07 and 76,390.89

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Solution

The fourth proportional to 140,921.40, 194,471.07 and 76,390.89 is: 105,419.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,921.40 : 194,471.07 = 76,390.89 : x
  2. Step 2: Convert to fraction form
    140,921.40/194,471.07 = 76,390.89/x
  3. Step 3: Cross multiply
    140,921.40x = 194,471.07 × 76,390.89
  4. Step 4: Simplify right side
    140,921.40x = 14,855,816,762.24
  5. Step 5: Solve for x
    x = 14,855,816,762.24/140,921.40
  6. Step 6: Final answer
    x = 105,419.17

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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.